James - When we were just on the Jewel of the Seas they had a large table set up by the elevators on deck 9 where they had 2 large jigsaw puzzles that folks would stop by and work on at all hours of the day and night.   I actually was on my way for coffee at 6AM one morning and there was a gentleman sitting at the table in his bathrobe doing the puzzle.    When they were finally done, they replaced them with 2 more.    Lots of fun.