Here's the thing; I go on a cruise to relax which is why I usually tend to go to the adults only area. It is usually quieter so you can enjoy a good book, a snooze or people watching. So why is it so hard to follow this rule?
If you bring kids onboard, then they shouldn't be taking up a lounge chair and having lunch with you. They shouldn't be jumping in the pool because it's "not as crowded" as the other one. How about you going to visit them in the noisey area? Too loud? Not as relaxing? Hmmmmmm, what a concept!!!!!
An adult area should only be adults and not your "perfect children".