I used this site's member reviews in my search for my cruise, so in the sense of fair play, I'm offering my $0.02, even if I'm not going to break much new ground. Overall, we found the cruise to be mostly positive, with only a handful of disappointments.
Background: We're a married couple in our mid-to-late '30s. This was our third cruise; our second with Royal Caribbean. The Navigator left on 1/19/08 for a five-day itinerary featuring stops in Ocho Rios and Grand Cayman.
We didn't decide to cruise until a few days before the ship departed. We were waitlisted for one day when we received an email notifying us that a junior suite had opened up. We quickly grabbed the room, and the waitlist process went smoothly.