Officially, the drinking age is 18. Although I have to agree that it's not strictly enforced. We went a couple of years ago with two teen boys, and the one who was 16 at the time, was spotted by his dear old mother (me) with a Belikin in his hand at a local eatery.....
I had a seat, and patiently waited for him to notice me.....
Needless to say, a mop was quickly needed under his table.....