Sure, personally I think the drinking age at 21 is silly. You can join the army and carry guns and put yourself in danger so why can you not drink? I would let my 18 enjoy themselves with a drink or two.
I would not even take my 18 year old with me. He would want to go off on his own and he would drink I know it. I think the legal age is 21 for a reason and I would not want my 18 year old doing it.
