We cruised last week on the Mariner of the Seas - and we can't say enough good things about the experience. I went with my husband and 12 year old son. We all loved it so much we can't wait to go back.
We've been on 7 different ships - Royal Caribbean, Carnival, and Princess - but this is the best ship we've been on by far. Why? First of all, the sheer size makes it so that there is so much to do - things like ice skating and the Royal Promenade (like a mall on the ship) - that you forget you are in the middle of the ocean!
The entertainment is first rate - great shows in the Savoy theater and there is dancing on the Royal Promenade. The ice skating show is incredible - I could not believe the quality of the skating and that we were at sea watching it!! Plus, being able to ice skate with my son was so much fun.
Good size interior cabin - little motion, good size bathroom, showers all have doors instead of curtains (what a plus). There is a little couch and table which comes in handy.