Welcome to SR Lilyondine
And thanks for reviving this thread, this is a subject which comes up a lot. The best thing is to just think about what you feel like doing and be aware of the dangers. I've been to gigs sober but I had to be absolutely determined that I wasn't going to drink! If there was any doubt I would have given it a miss.
Do introduce yourself in the Newcomers Forum too...you'll get more responses there x