A WARNING !
Alcohol Diminishes Inhibitions ... and Resolve
One of the big problems with alcohol is that it reduces a person's inhibitions. For someone who is trying to quit smoking, reduced inhibitions increase the risk of a smoking relapse. It just doesn't seem so important to stay true to your quit program once you've had a couple of drinks.
A quit is a terrible thing to lose. Please don't chance it!
Additionally, you will probably be with friends who are smoking, or you'll see other smokers at the bar, making it all the more difficult for you.
Quitting can be done successfully though. With a plan and some practice, you can recondition yourself away from feeling like you need to smoke while enjoying a drink or two when out with friends.