Visit the FlyZone on the French Side -- it is a zipline adventure course for both kids and adults.  The Hidden Forest Cafe has been written up in several food/cooking magazines.  Portions are large and the food is divine.

A day at Pinel Island is a must.  Pinel has often been called St. Martin's best kept secret, but has always been popular with locals.  To do the day properly start with some snorkeling in the morning and then move onto sun worshiping followed by a long leisurely lunch at one of the three amazing restaurants and then look through the Paradiso Gift Shop.  You'll find the restaurants, chairs to rent and gift shop on the main beach, but if you are looking for a bit more seclusion walk the path across the island and you'll end up on a pristine beach and likely have it all to yourselves.  To get to Pinel drive or taxi to Cul de sac and then either rent kayaks or take the 5 min ferry across.  Another option is to take the pinel snorkeling tour offered through Wakawa Eco-Klub which includes transportation, guided snorkel tour including audio snorkel, and plenty of time to enjoy the island.

 Aqua Mania offers full day sailing and snorkeling trips to Prickly Pear and Anguilla, and the ferries to St Barts and Saba are a great way to see the beautiful islands surrounding St Maarten. If you'd rather spend a half day, there are snorkel trips, scuba diving and jet ski tours. Sunset and Dinner cruises on the island include a relaxing sail, drinks, and scrumptious snacks as you watch for the "green flash." Tango provides a caribbean style buffet on the boat that will make you hope the night never ends.

If you prefer land-based activities, Calypso is a nice lagoon cruise to Marigot, where you dine at Le Petit Auberge on the water in the French capital. Calypso also has a childrens lagoon cruise once a week. Each child gets their shot at captaining the boat around the lagoon, waterbomb an old wreck and collect treasure.

Playstation is also great for the kids. It's a playground on the water--can it get any better?

These trips don't go everyday so make sure you check it out before you make your vacation day plans.

Horseback riding at Lucky Stable in Cay Bay is fun. Any level rider is welcome to come along for the ride. Everyone has the opportunity to swim with their horse. They even have pony rides for the little ones. Lucky Stables is located at Seaside Nature Park where you can hike, swim, kayak and snorkel.

You should also consider the Butterfly Farm (La Ferme des Papillons) in Le Galion, which has a lot of rare species.