I might nurse one beer over the course of a gig, usually during the early part. I've had a lot of gigs where all I had was some tonic water over ice w/ a twist. There were 2 St. Paddy's Day gigs where I splurged and had 2 beers during the gigs, but both of those were more laid back & casual atmospheres (obviously). I weigh around 165 lbs, so one beer over 3-4 hours isn't a big deal. Most of the gigs I do are a good hour drive, and I don't want to be a DUI or even have the feeling of a little extra fatigue for the drive home. Once in the comfort of my home, I may crack open a bottle of suds while I unwind.