Independence of the Seas: 8-Night Pacific Coast from Miami

Miami cruise port, officially called PortMiami, is the busiest cruise port in the world by passenger volume. Millions of people pass through here every year, and nearly every major cruise line uses it as a home port.

Falmouth's historic port was purpose-built for mega-ships and sits in a town known for its well-preserved Georgian colonial architecture. Popular excursions include Dunn's River Falls, bamboo rafting on the Martha Brae River, and Montego Bay beaches.

Grand Cayman is the largest of the three Cayman Islands, a British Overseas Territory in the western Caribbean known for Seven Mile Beach, exceptional diving, and its role as a major offshore financial center. George Town serves as the cruise port, but there's no pier large enough for cruise ships.

Cozumel cruise port is one of the busiest in the Caribbean, with multiple ships docking on the island every day during peak season. Cozumel is a flat, laid-back island off the eastern coast of Mexico's Yucatán Peninsula, and it's been a cruise staple for decades.

Costa Maya cruise port sits on the southern tip of Mexico's Caribbean coast, about 150 miles south of Cancun and close to the border with Belize. The port is not a city.