Miami ( /maɪˈæmi/ or /maɪˈæmə/) is a city located on the Atlantic coast in southeastern Florida and the county seat of Miami-Dade County, the most populous county in Florida and the eighth-most populous county in the United States with a population of 2,500,625. The 42nd largest city proper in the United States, with a population of 408,568, it is the principal, central, and most populous city of the South Florida metropolitan area, and the most populous metropolis in the Southeastern United States. According to the US Census Bureau, Miami's metro area is the seventh most populous and fifth-largest urban area in the United States, with a population of around 5.5 million.

Miami is a major center and a leader in finance, commerce, culture, media, entertainment, the arts, and international trade. In 2010, Miami was classified as a Alpha- World City in the World Cities Study Group’s inventory. In 2010, Miami ranked seventh in the United States in terms of finance, commerce, culture, entertainment, fashion, education, and other sectors. It ranked thirty-third among global cities. In 2008, Forbes magazine ranked Miami "America's Cleanest City", for its year-round good air quality, vast green spaces, clean drinking water, clean streets and city-wide recycling programs. According to a 2009 UBS study of 73 world cities, Miami was ranked as the richest city in the United States, and the world's fifth-richest city in terms of purchasing power. Miami is nicknamed the "Capital of Latin America", is the 2nd largest U.S. city (after El Paso) with a Spanish-speaking majority, and the largest city with a Cuban-American plurality.

A cruise line is a company that operates cruise ships. Cruise lines have a dual character; they are partly in the transportation business, and partly in the leisure entertainment business, a duality that carries down into the ships themselves, which have both a crew headed by the ship's captain, and a hospitality staff headed by the equivalent of a hotel manager.

Among cruise lines, some are direct descendants of the traditional passenger shipping lines, while others were founded from the 1960s on specifically for cruising. The business is extremely volatile; the ships are massive capital expenditures with very high operating costs, and a slight dip in bookings can easily put a company out of business. Cruise lines frequently sell, renovate, or simply rename their ships just to keep up with travel trends.

A wave of failures and consolidation in the 1990s has led to many lines existing only as "brands" within larger corporations, much as a single automobile company produces several makes of cars. Brands exist partly because of repeat customer loyalty, and also to offer different levels of quality and service. For instance, Carnival Corporation owns both Carnival Cruise Lines, whose former image were vessels that had a reputation as "party ships" for younger travellers, but have become large, modern, and extremely elegant, yet still profitable, and Holland America Line, whose ships cultivate an image of classic elegance.