NAU area bars/restaurants need 21st B-Day G.C.
I do like Beaver Street, but Buster's is also a great place to grab a drink. They have something called a Buster Bowl which I couldn't locate on the online menu just now. It's one of those fishbowl type drinks that casual dining chains have, except the ones here aren't all mixer - they contain obscene amounts of alcohol. I'm sure a 21 year old would appreciate that.
Buster's Restaurant & Bar
1800 S Milton Rd # 111, Flagstaff, AZ