I don't think I play any better or worse whether I am drunk or sober, I play like shit all the time. But I am much more relaxed when I have had a few ales so I don't concentrate as much on what I am aiming for and just like to have a bash and keep the ball on the playfield. Sometimes this pays off and I will have a cracker game, other times I don't even see the ball drain. Pretty much the same when I am sober, but it hurts more.
Matthew