7-Night Panama Canal 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.

Coco Cay is Royal Caribbean's private destination in the Bahamas, branded as "Perfect Day at CocoCay." The island sits in the Berry Islands chain, about 55 miles north of Nassau, and is exclusively visited by Royal Caribbean 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.