We really loved the Serenade of the Seas ship. It was a nice compromise between the larger class of ships and the smaller class. We had never been to the Southern C ports (there were 6 stops) and loved the port of calls. The snorkeling with the Turtles and the Sting Rays were the highlights.
The dining room service was excellent and the food very good (although we are not picky eaters), The entertainment was good, although we had seen a few of the acts before. We already have 4 more cruises booked with RC. I imagine once you start going on a particular cruise line one sticks with that line. We have been on three different lines, and quite frankly, we do not see a huge difference (although some people swear by particular lines)...oh, whatever. Maybe Azamara or Cunnard would be better but that is not our thing. Overall...we were very pleased with the cruise and with Royal Caribbean.