Carnival Firenze

Sail on a comfortable catamaran to swim with sea turtles in calm, clear water, then relax at a white-sand beach before heading back to the ship.

A three-hour walk through historic Charlotte Amalie tasting West Indian dishes and local rum, with the story of the island's Danish colonial past along the way.

Ride a guided off-road route through the hills of St. Thomas for big views over the harbor and neighboring islands. About two hours, so it fits an easy port day.

Circle all of Antigua by speedboat, stopping to snorkel, swim at Stingray City and see Devil's Bridge and the island's quiet bays from the water.

A guided drive to the island's highlights, including Nelson's Dockyard, the view from Shirley Heights and some of Antigua's famous beaches.

Zip around Antigua in an open-air tuk-tuk, through the rainforest and on to a couple of beaches, for a fun, laid-back half day.

A day on the water in Guadeloupe's lagoon: mangroves, coral reef snorkeling and the tiny sandy islet of Ilet Caret.

Visit the real spots from the TV show "Death in Paradise," including the village of Deshaies and Catherine's bar, plus the botanical garden.

A guided visit to a traditional Guadeloupe rum distillery to see how agricultural rum is made, ending with a tasting.

Discover the Spice Isle: swim at Concord Waterfall, see how Grenada's chocolate is made, taste local rum and visit the Grand Etang crater lake.

Float down a rainforest river on a tube, with stops at Annandale Falls and Grand Etang lake.

Snorkel among the famous underwater sculptures at Moliniere Bay and over a nearby reef on a four-hour boat trip.

Barbados' most-booked trip: sail the west coast, swim with sea turtles, snorkel over shipwrecks in Carlisle Bay, and enjoy lunch and drinks on board.

Ride an electric tram deep into Harrison's Cave to see crystal-clear streams, waterfalls and huge stalactites.

A full-day drive from the calm west coast beaches to the wild Atlantic shore at Bathsheba, with stops at the island's best lookouts and landmarks.

A fast boat ride around the island to snorkel with turtles and tropical fish, then beach time and lunch on a small island off the coast. One of the most-booked tours in St. Maarten.

Drive your own off-roader over the hills and coast roads, ending at Maho Beach, where jets land just over your head. Built around cruise ship times.

A private guide shows you both the Dutch and French sides of the island: Philipsburg, Marigot, Orient Bay and the best lookouts, at your own pace.

A small-group trip into the only tropical rainforest in the U.S. National Forest system to hike, swim in river pools and ride a natural rock waterslide.

Glide along San Juan's coast with an underwater jet scooter, looking for sea turtles on the reef. Videos of your swim are included, and it takes about 90 minutes.

See the colorful streets, forts and city walls of Old San Juan by golf cart, covering more ground than on foot, just steps from the cruise pier.