If you're expecting to have 'lots' it might be worth dropping your evening metformin (if that's when you take it) just for one night. Someone told me that when I was first diagnosed; thinking about it now, I dont really see why. I'm on 3 met a day, and I don't have any problems drinking a whole bottle of red in an evening. Slips down quite easily, in fact . . . :wink:
A day off to celebrate won't hurt. But you may get drunker quicker, and some people on Met (not me!) get worse hangovers.
Have a good time!
Viv 8)