While watching a match earlier I heard an announcement that anyone under 15 years old had to be in the company of their parents at all times. Actually the tourney is in the Casino's hotel, which while connected by a hallway (I believe. haven't ventured down that hall yet) and is actually on the boat. You probably have to be 21 to venture in to the casino, but the tournament should be ok if you're over 15 or in the company of your folks.
just more hot air!
Sherm