when i went on the summit the tour guide told me that kids over 12 were ok if they were with their parents and remained calm and were not a disterbance. I did notice quite a few kids in the t pools but they were all well behaved so i didn't mind. Just wanted to pass this along.
The pools on theM class ships are hardly more than hot swimming pools with a few jets. The pools on Galaxy, Century and Mercury are located inside the Spa, are smaller and are very much like a spa treatment. I agree with Mike.