Mesmerizing Ile aux Cerf: Speed Boat, GRSE, Lunch & Undersea walk (Full Day)

The best part of this day is the mix of speedboat travel and sea time. You race from Trou d’Eau Douce across clear east-coast water, walk beneath the surface among fish, eat a barbecue lunch at Islet Margenie, then pass Grand River South East waterfall on the way back.

I like the reliable hotel pickup and the small maximum group of 12. I also like that lunch includes grilled chicken, fish, salad, soft drinks, water, beer, wine, and local rum. The main drawback is the loose flow at the start, when several boats and activities may be loading at once. Ile aux Cerfs can also feel commercial, with sun beds and umbrellas costing extra in some areas.

Key points to know

• The underwater walk lasts about 15 minutes: It is the tour’s most unusual activity, but children are not automatically included.
• The speedboat is part of the fun: Expect quick runs and, on the return, lively turns rather than a quiet ferry ride.
• Lunch is served around noon at Islet Margenie: You get a barbecue meal and alcoholic and non-alcoholic drinks.
• The east coast scenery changes often: White beaches and turquoise lagoons give way to the river and Grand River South East waterfall.
• The group is capped at 12 people: That usually allows more direct attention than a large coach-and-boat outing.
• Bring towels and spare clothes: You will likely get wet, and changing between activities can be part of the day.

Why this Ile aux Cerfs day works

This is not simply a beach transfer. The day combines four very different Mauritius experiences: a village departure, a fast boat crossing, a short underwater activity, and a river-and-waterfall visit.

That variety gives the tour good value at $139.37 per person, especially since hotel pickup, the speedboat, lunch, drinks, and the main stops are bundled together. You are not paying just for a few hours on a crowded beach.

The trade-off is that Ile aux Cerfs itself is a busy day-trip destination. You may find paid loungers and umbrellas, activity sellers, and several groups moving between boats. If your ideal island day means complete quiet and no schedule, this will feel too organized. If you want to see several east-coast sights without arranging each piece yourself, the format makes sense.

The tour lasts about seven to eight hours and begins around 8:30 a.m. Pickup time can vary by hotel, so keep the morning open and do not plan a tight appointment afterward.

Leaving Trou d’Eau Douce by speedboat

Your pickup takes you to Trou d’Eau Douce, a fishing village on the east coast. The road transfer is short for some hotels and longer for others, but the village is the practical gateway for the boat portion of the day.

Once you board, the trip to Ile aux Cerfs becomes an attraction in its own right. The boat crosses the east-coast lagoon, where you get broad views of pale sand, palm trees, and clear water. A speedboat also gets you there faster than a slower shared craft, leaving more time for swimming and other activities.

The ride is not always gentle. On the return, the boat may make quick turns and run at high speed, which many people find exciting. If you prefer a calm crossing, sit where you feel most comfortable and tell the crew if you are prone to motion sickness.

The early loading process may feel untidy. Different boats can be handling different activities, and you may change boats during the day. That does not necessarily spoil the outing, but it is worth expecting a practical marina operation rather than a perfectly quiet start.

Four hours around Ile aux Cerfs

Ile aux Cerfs is the visual centerpiece: white sand, palm trees, and bright turquoise water. The included island time lasts about four hours, although the schedule also includes the underwater walk and lunch during the broader visit.

You can swim, sunbathe, and walk along the beach. The water and sand are the main reasons to come, so pack swimwear under your clothes and keep your expectations realistic. The island is famous and heavily used for day trips, not an untouched private island.

One area can feel commercial. Sun beds and sun shades may cost extra, and some beach sections offer little to do beyond sitting by the water unless you pay for an additional activity. At the same time, you can avoid spending more by swimming, walking, and using the time as a simple beach break.

The tour also points out local plants and animals along the way. The setting gives you a chance to watch for birds, fish, monkeys, and fruit bats, although wildlife sightings are never guaranteed.

The underwater walk in the coral garden

The undersea walk is the most distinctive part of the package. You walk on the lagoon floor inside a coral reef area, wearing the equipment supplied for the activity, and watch fish and other sea life at close range.

The actual walk is short, about 15 minutes. That is enough time to enjoy the strange sensation of walking underwater, but it should not be confused with a long snorkeling session. The tour description also says snorkeling is available around Ile aux Cerfs, but some areas may require an additional payment.

The activity can be thrilling, yet the arrangements may feel crowded. Several participants may be moving through the water, and there may be only one instructor handling people in the sea at a given moment. If you feel nervous underwater, tell the staff before you begin and stay attentive to instructions.

Children require special attention. The undersea walk is not included for children automatically, since participation depends on the parents. Children are charged only for the speedboat seat, so confirm the arrangements before booking if this activity is central to your family’s plans.

Bring a towel and spare clothes. You may change boats or activities during the day, and dry clothing will be welcome after the sea walk and swimming.

Barbecue lunch at Islet Margenie

Around noon, the group heads to Islet Margenie for a freshly prepared barbecue lunch. The menu includes grilled chicken, fish, salad, and other items, with a vegetarian option available if you request it when booking.

Drinks are part of the package at lunch. You can expect soft drinks, water, beer, wine, and local rum. The meal is not just a quick sandwich stop, which gives you time to sit, eat, and swim afterward.

This is one of the strongest value points in the price. A full meal with unlimited alcoholic and non-alcoholic drinks can quickly add to the cost of an independent beach day, particularly in a popular resort area.

Still, be sensible with the rum and other alcohol. You will return by speedboat, and the afternoon includes more time in the water. Tell the operator about food allergies or illness in advance, and request the vegetarian meal before the day begins.

There is one practical point to watch. Although water is included with lunch, you may not always have a drink in hand during every transfer or beach period. Carrying your own water is sensible, especially if you plan to spend much of the day in the sun.

Grand River South East waterfall by boat

The final major stop is Grand River South East, usually called GRSE. This is the longest river in Mauritius, and it reaches the sea through a wooded river mouth that can be visited by boat.

The river trip changes the mood of the day. After the bright beach and open lagoon, you move into a narrower setting with older trees along the banks. Look upward for fruit bats resting in high branches, and keep watch for monkeys jumping through the trees if conditions allow.

The waterfall is reached by boat, and the view is the main attraction. The stop may be brief, so do not expect a long walk or a full waterfall hike. The tour gives you a chance to see the falls from the water before the speedboat heads back.

The return ride can be lively, with fast runs and sharp spins. That is fun for many people and less appealing if you want a quiet end to the day. Secure loose belongings before the boat moves quickly.

What the $139.37 price includes

At first glance, $139.37 is more than the cost of finding a public beach and taking a taxi. The comparison changes once you count the hotel transfer, boat transport, underwater walk, waterfall visit, barbecue lunch, and drinks.

The package is strongest for someone who wants a full day with little planning. You do not need to arrange separate transport to Trou d’Eau Douce, negotiate a boat trip, find lunch, and then organize a return journey.

The value is weaker if you only want a few quiet hours on Ile aux Cerfs. You may spend part of the day moving between activity points, waiting during boat changes, or paying extra for certain beach comforts. The underwater walk is brief, so do not book this package expecting hours below the surface.

A small group of no more than 12 helps justify the price. It should make it easier to ask questions and keep track of the schedule than on a large excursion. It does not remove every bit of organized chaos, especially at the boat launch.

Who should book this Mauritius excursion

I would choose this tour if you want an active, all-in-one east-coast day. It suits couples, families with older children who can manage the water activities, and first-time visitors who want to combine the island’s famous beach with a river stop.

It also works well if you value food and drinks being settled in advance. The barbecue lunch at Islet Margenie gives the day a clear pause, and the included drinks mean you can enjoy the meal without searching for a restaurant.

You may prefer another option if your priority is snorkeling for several hours, a quiet beach, or a private boat. The undersea walk is short, snorkeling may cost extra, and Ile aux Cerfs can feel busy in popular sections.

The experience depends on weather. In a cyclone or torrential rain alert, the operator may cancel and issue a full refund. Otherwise, free cancellation is available until 24 hours before the start time. Inside that window, changes and refunds are not accepted.

Practical tips for a smoother day

Wear swimwear beneath easy clothing. You will have a better time if you can change quickly between land, boat, and water activities.

Bring:

• A towel and spare dry clothes
• Sun protection
• Secure footwear for moving around boats and beaches
• A small waterproof bag for valuables
• Personal water for periods outside lunch

Tell the operator about allergies, illness, or a vegetarian diet when you book. Pickup times vary by location, and at least two people are required per booking.

The tour accepts mobile tickets, and most people can participate. Since the day involves boat boarding, swimming, and an underwater activity, you should consider your own comfort in water before reserving it.

Should you book the Ile aux Cerfs speedboat tour?

Book it if you want a packed east-coast day with fast boat rides, an unusual underwater walk, a real barbecue meal, and a waterfall visit. The included transfer and drinks make the $139.37 price easier to defend, and the group limit of 12 is a useful advantage.

Think twice if you want an uncrowded island, a long snorkeling session, or total control over your schedule. Ile aux Cerfs is attractive but commercial in places, the boat changes can be hectic, and the undersea walk is short.

For most visitors, this is best viewed as a varied Mauritius sampler rather than a private-island escape. That is its strength: you see and do a lot in one day. Just bring dry clothes, allow for a busy start, and confirm children’s undersea arrangements before booking.

FAQ

Where does the tour start?

The tour begins with hotel pickup in Mauritius, followed by a transfer to Trou d’Eau Douce on the east coast. The listed start time is 8:30 a.m., but pickup time can vary by location.

How long does the experience last?

The full excursion lasts approximately seven to eight hours.

Is hotel pickup included?

Yes. Round-trip transfers from your Mauritius hotel are included, and pickup is offered from accommodations across the island.

How many people can join the tour?

The activity has a maximum of 12 travelers. A minimum of two people per booking is required.

What activities are included?

The day includes a speedboat trip to Ile aux Cerfs, time for swimming and sunbathing, an undersea walking activity, a barbecue lunch, drinks, and a visit to Grand River South East waterfall.

Is the undersea walk included for children?

Children are not automatically included in the undersea walk. Their participation depends on their parents, and children pay only for the speedboat seat.

What food is served at lunch?

Lunch includes grilled chicken, fish, salad, and other barbecue items. A vegetarian option is available if you request it when booking.

Are drinks included?

Yes. Lunch includes soft drinks, water, beer, wine, and local rum.

What should I bring?

Bring your own towel and spare clothes. You should also tell the operator about food allergies or illness before the tour.

Can I cancel for a refund?

You can cancel at least 24 hours before the start time for a full refund. Cancellations or changes made less than 24 hours before the start time are not refunded. If poor weather causes the operator to cancel, you will be offered another date or a full refund.