LOL, don't dwell on tomorrow, today. Deal with tomorrow when it is today.
You will be fine. I have noticed, if I have a DIFFERENT drink in my hand at all times, I don't feel the need for the beer so much. I just keep sipping, and it really helps. My drink of choice is gatorade, and I carry a 32oz jug of that around with me.
I don't get out much, but I think if I have to, I will just say, I got really dehydrated, and the gatorade is what I need for now. It isn't a lie. And it is socially acceptable, at least until I can deal in different ways with not drinking in a social situation!