Those nice evenings when you want to have a few drinks, why not grab a bottle of water after you get your buzz on and take a nice long walk? Take a friend, significant other and just hit the road. You'll be surprised how long you can walk when you have the right amount of alcohol in you.
Of course it's not that easy if you don't have a place to walk but if you do walk it out. You may not LOSE weight over this but at least you'll burn some calories and not feel quite so guilty about it. Plus drinking makes people want to talk so you're not bored while walking.