Thanks a lot, dggirlie. It helped out a lot. I don't think my school is that strict, and knowing fall is informal for us, I'm not sure what the rules would be for that. I was just wondering if there was any NPC guidelines. I might just call the head of greek life at my school and ask her what she thinks.
I just don't want to get myself or the sorority into any situation that would hurt me as a PNM or them as a house. Thanks for the help