[aephi alum]

You don't have to drink, do drugs, party, etc. just because you are in a sorority. You'll find a wide variety of sisters - people who are obsessed with GPA and only go to the occasional mixer or sisterhood event, people who never miss a social event and are also involved in other activities, and everything in between. And, yes, you will probably come across women who take every opportunity to get falling-down-drunk ... and typically they end up before the chapter's standards board.

So, no, you don't have to party and drink, but you do have to be willing to socialize with your sisters, go to a mixer or three, and participate in the chapter's community service work.