We travel with an adult cruise group. We have an excellent Travel Agent who sets us up on the newest and best ships of Royal Caribbean. We were on the Symphony last year for Super Bowl. This year we were a little skeptical because it was winter break for school age kids. We thought it was going to be wall to wall people. The Symphony can handle crowds!!!! We had absolutely no problems with anything.
The ship is beautiful. So many things to do. So many great spots to hang out. The only thing missing is an adult only pool. The Harmony has one but the Symphony does not.
My favorite part of the ship is the Trellis Bar in Central Park.