Pool is 16 - no problems there. They do enforce the drinking age though and if caught supply liquoe to a minor you are usually booted off the ship.
Depending on where you're sailing sometimes a parent can sign a form avaialable on RCL's site that will allow an 18 year old to drink. Otherwise it's 21.
As for HAWK's rant, good on ya lad, but I would never want to see young kids drinking.
Celebrity Constellation - March 17 followed by Celebrity Reflection - March 22
44 cruises - too many to list however cruiselines are in no particular order:
and some unknown tub
Yes, I'm a Royal Chump and proud of it.