A-
Drinking, Ok. Sleepovers, No.
Notre Dame is incredibly lenient when it comes to drinking (yes, even underage) on campus. The onus is put on RA's (who are some of your best friends) and rectors (who usually don't care at all) to reign in unacceptable behavior. Therefore, if you're not really stupid about it you shouldn't have any problem drinking or having parties whenever you please. On the other hand, don't plan on having girls stay over every night. Once visitation hours are over, it's fairly easy to keep a girl in your room and not get caught, but you're screwed once you finally do.