I've been checked for license before while drinking beer. They said they didn't want to rain on anybody's trip, as long as your not drunk hootin, and loud mouth. They were very nice about it. I rented a cabin for family members at the state park at Grenada, and shoot the guy that over see's the cabins was drinking.
Just be a little discreet, shoot almost everybody at the lakes have beer in the coolers,and drinks, don't worry about it, and have a good time.