Island Princess offers a wide choice of entertainment and dining options in spacious surroundings. It features a casino with a Paris Street theme. Island Princess passengers tend to be Mixed Ages and American and British depending on region and ship.. When all cabins have double occupancy, the ship provides a space ratio of 45.1 tons per passenger and a crew to passenger ratio of one for every 2 passengers. At full capacity the space ratio is 35.3 tons per passenger and the crew ratio is one to 2.5 passengers.