My sister and her husband got off yesterday...LOVED it. Their first cruise- prominade room. So much to do on the ship. Only negative was the line to wait for the water "surfing thing" was an hour long. She suggested if it's something you really wanted to do, do it while people are in ports. They also got scuba certified through RCL....And won $350 at the casino!
When we went the first week in May the Flow Rider was only a few minutes wait and that was while the person was trying to get a balance on the board lines weren't very long at all but now school is out and maybe more people who knows.