Regal Princess includes enclosed glass-bottom walkway extending from the top deck more than 28 feet over the side of the ship. Also an adults-only pool surrounded by plush cabanas, 2 additional pools, outdoor club & movie screen. Regal 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 44.1 tons per passenger and a crew to passenger ratio of one for every 2.3 passengers. At full capacity the space ratio is 39.2 tons per passenger and the crew ratio is one to 2.6 passengers.