Not sure about AEA regulations regarding nudity/simulated sex acts onstage - but, since you're doing this in an educational setting, definitely read up on school resources for LGBTQ issues, Ombuds/conflict resolution, "safe campus" policies, etc. so that, should a company member ask, you can produce current contact and policy info quickly.
Print up "Private Rehearsal" signs for unlocked studio doors, so that awkward interruptions stay at a minimum.
My first show in university had a lot of very intimate sequences - partial nudity, simulated sex - feel free to PM me with questions.