We spent good time at serenity bay on our honeymoon and 5th anniversary cruise (I don't think there were cabanas back then, but I could be wrong and just don't remember them). Our DD will be 17 on our next cruise so we will be able to go there and hide form her if we want to

, or will be able to get a cabana there in close in out years as she'll be 18 or not traveling with us. Look forward to it.
We had lunch at serenity bay on our last cruise as our DD was off with her Vibe crew, but didn't get to spend much time there.