Royal Caribbean International's Perfect Day at CocoCay private island
Thrill Waterpark at Perfect Day at CocoCay.
  • Cruise lines don't just own big boats — they also own private islands in places like the Bahamas and Belize.
  • The properties have proven valuable for cruise lines like Carnival, its CEO said in March.
  • See photos of the 6 private islands owned by Royal Caribbean, Carnival, MSC, and Disney. 
1. Castaway Cay, Disney Cruise Line
castaway cay