Imagine sailing the open seas on a 18,000 square foot casino cruise ship. Well if you were you would be on the Allure of the Seas owned by Royal Caribbean cruise lines.  The ship holds up to 5,400 guests has 2 dozen restaurants 15 bars and lounges plus many other amenities. There are 27 gaming tables and 456 slots.

Here are a few other large casino cruise ships

2. Oasis of the Seas: 15,000 square feet

3. Norwegian Epic: 13,000 square feet

4. Symphony of the Seas: 12,000 square feet

5. Sun Princess: 9,000 square feet

So just remember if you going to go on a cruise make sure to check what amenities each one has.