Most on here will tell you to abstain from adult beverages. Probably good advice. Actually, it's very good advice if you are having a beer or several with people that are also nicotine addicts like yourself. You have a few, they have a few, they pull out a can, and you find yourself starting over again and feeling like shit about it.
I, for the most part, don't live around anyone that dips or smokes or chews. None of my neighbors do. None of the friends that I hang out with do (or if they do they are ninjas like myself). So I haven't worried about drinking the last three weeks. Actually, I figure that drinking has been insurance for me - after a few beers I know I'm not driving anyway so if I don't have any around the house then I'm not going to drive to go get some!