Norwegian Cruise Line offers 11 cruises to the Caribbean that cost less than $510. Departure ports include Miami, Orlando, New Orleans and Tampa. Cruises range from five to seven days, and sail to Jamaica, Cozumel, Grand Cayman, Costa Maya, Belize City and St. Thomas, among others. Norwegian's ships' amenities include multiple restaurants and bars, a bowling alley, a fitness center, and a spa, which offers special packages for couples. Norwegian Cruise Line 7665 Corporate Center Dr. Miami FL 33126 866-625-1166 ncl. com