New Orleans is a Louisiana city on the Mississippi River, near the Gulf of Mexico. Nicknamed the "Big Easy," it's known for its round-the-clock nightlife, vibrant live-music scene and spicy, singular cuisine reflecting its history as a melting pot of French, African and American cultures. Embodying its festive spirit is Mardi Gras, the late-winter carnival famed for raucous costumed parades and street parties.

Cozumel, a mostly undeveloped Mexican island in the Caribbean Sea, is a popular cruise ship port of call famed for its scuba diving. At Arrecifes de Cozumel National Park, there's diving spots around a section of the Mesoamerican Reef and the Museo Subacuático de Arte’s submerged sculptures. Chankanaab is an eco park surrounding a lagoon with underwater caverns, home to dolphins, manatees and sea turtles.

Roatán is an island in the Caribbean, about 65 kilometres off the northern coast of Honduras. It is located between the islands of Útila and Guanaja, and is the largest of the Bay Islands of Honduras. The island was formerly known in English as Ruatan and Rattan.

Harvest Caye is a private island owned by Norwegian Cruise Line, located in southern Belize. The caye features wildlife exhibitions including a blue morpho butterfly house.

Costa Maya is a stretch of Caribbean coast on Mexico’s eastern Yucatán Peninsula. Mahahual village is known as a popular cruise ship port, with beaches and coral reefs. Offshore, the reefs and mangroves of Banco Chinchorro Biosphere Reserve are inhabited by sharks, dolphins and turtles. To the north, Sian Ka’an Biosphere Reserve is home to jaguars, monkeys and hundreds of bird species.