It's been awhile but I've been on several Atlantis cruises and always had a good time. Short trips out of the U.S. tend to be the party crazy ones. The further away 1) Baltic 2) Greece and islands )3 Asia are all more expensive and tend to have a better mix of older and settled types mixed in with the younger. You pretty much find the people you like to hang with in the first couple of days and ignore what doesn't suit you. Better entertainment - we've had Debbie Reynolds, Charo, Rita Moreno and Belinda Carlisle at different times.