Probably a bit late, but enjoy yourself! The baby hasn't implanted yet, in fact conception may even occur during the show (as conception time DOES NOT equal BD time) so you'll be safe.

Believe it or not, those little babbies are right tough old things. Firstly, they manage to parasitically attack your body and make you not reject it, and then not only make you go off things that are bad for it, but they have your liver and kidneys working overtime just in case.

The only time I would say not to drink at all would be if you're driving. Hope you are pg this time and have to use the "designated driver" excuse for the next few months!