There are some girls you respect, and your goal (believe it or not) isn't "get them as drunk as possible and have sex with them".
Theres a girl I've been seeing who I actually care about and don't want to end up like that. We drink together all the time, so its hard to avoid.
If its someone you care about, explain "No, not right now. I'm sorry to disappoint you, but I respect you too much for that. Call me, we can do it right...dinner, a movie, etc." If shes worth your time for a relationship, she will understand.
If not, shiiiiiiit, tear it up bro. There are girls that are like that too. I used to feel bad about the whole "one night stand" stuff...but not so much anymore. She wants it, you wants it, go for it.
Just don't drink yourself ******ed. I drink (kinda) often, and I have friends come over that don't drink. They try to keep up, and end up dying on my couch at about 9:29. Nobody is gonna think you're a wuss if you're not pounding them down. Grab a drink, and sip it for as long as you want. Don't worry. Edit: Don't sip a beer though, get a mixed drink. Sipping a beer only makes for disgusting, warm beer.
Edit: Lol about the fights. You guys must party with some real assholes. I dunno about you guys, but theres nobody having that shit at my parties. One fight, you're out. Forever. I don't drink and burn to be stressed, I do it to relax and have fun with my buddies on a weekend. Fighting is stresssss. No stresssss.