The two cruise lines that depart from Jacksonville are Carnival Cruise Line, Norwegian Cruise Line and American Cruise Lines. Two are large ships and the other has small ships. And size isn't their only difference. The ships are completely different in style and the places they go.
1. Carnival Cruise Line: the big ship makes 4- and 5-day cruises to the islands of the Bahamas from Jacksonville. Features include WaterWorks water park and Camp Carnival for kids. Adults will like the Serenity adults-only retreat, Spa Carnival, and live entertainment.
2. Norwegian Cruise Line: a casual mid-size ship offers 4- and 5-day cruises to the Bahamas as well as longer Caribbean cruises from Jacksonville. The ship has multiple dining options, spa, casino, live entertainment and Splash Academy for kids.
3. American Cruise Lines: these small ships offer 7-night "Great Rivers of Florida" cruises and 7-night "Historic South and Golden Isles" cruises out of Jacksonville. The ships may be small, but they have big staterooms, lounges, and observation decks. Other features include entertainment every evening, daily presentations about local topics, and complimentary cocktail hour. American's ships are made in the USA, and carry an American crew.