Drinking is great for the game when it's one or two of the other folks who're drunk. I think a lot of people would say the best time to hunt for a cash game is after dark when the drinking has just begun. If your cardroom has a big bar and concerts, it is sure to bring in affluent young folks who barely know how to play.
However, don't be the ONLY sober person at a table. The game will be unpredictable, and you may see all-in preflop
hands that make absolutely no sense.
Maybe just don't drink ever, i'd say.
I know this may be an unpopular opinion, but don't smoke while you're playing live either, because your attention/memory/reaction is greatly affected. Imagine sitting at the table all crittered and repeatedly having to be told when it's your turn.