Based on this thread, I'm thinking the whole shebang would, at one point, devolve into a marijuana: Good or Evil? discussion/fiasco, and many a broken beer bottle would be had.
Not from the people smoking pot though; they'd be way too chilled out.
I'd probably have to feel it out. When I'm at a party, my instinct is to head to the kitchen where the booze is, and generally when I get there, there's one or two people like me lingering. Chat with them a while, and then we feel united as a group and go join the bigger party. Not wholly sure who'd be off being fairly awkward and drinking with me, though. I tend to like that situation, because I take charge of the kitchen, and become queen of the socially awkwards, and they seem to always think I'm outgoing and know what I'm doing, but really, I'm just like, "Yes! They're awkward like me, so they're not judging me right now and thinking I'm a loser! I will take charge!"
I'd like to talk to pretty much everyone on this forum though. That'd be fun.