<p>Yes, at my school the bars allow you to enter at 19, but you can't consume alcohol. The have another test (besides checking your ID) to identify you as someone of legal age (wristbands, hand stamps, etc). </p>
<p>I should have been more clear. As for what you posted, they either put a 19 stamp on your left hand or a 21 stamp on your right. When he goes to stamp, I just hold out my right hand and the guy assumes he read my ID wrong and gives me the 21 stamp. Not too much of a hastle...</p>