Yeah each night has a theme. I know that one night is caribbean themed along with the deck party. Another is surf themed and of course, night 6 is Prom Night along with the 2nd formal night. The Mariner of the Seas is a very nice ship as the newest of the Voyager class of ships. It also underwent an extensive refurbishment in April that IMO it didn't even need. I have 2 reviews on the Mariner in the "Cruise Reviews" sticky thread. The one from April, 2007 is most acurate. Any specific ??s, feel free to post em or PM me.