Disney Cruise Line is the leader in cruises for families with young children. Unfortunately, they don't offer cruises from Jacksonville FL at this time.
What is included on a Disney cruise? Live Broadway-style Disney shows. State of the art movie theaters. Fun deck party celebrations. Pools of different types, including one just for adults. Sports Deck. Disney character experiences. Many programs and facilities for kids. Staterooms designed for families. And your choice of a variety of dining options.
There are Disney Cruises out of Port Canaveral, Florida, which is 160 miles south of Jacksonville. About a 2 hours and 20 minutes drive. Port Canaveral is a major cruise port with 3 Disney ships.