Hey! Welcome to a place where y'all can find R and NC-17 rated fics. Because most of us enjoy a little o' that every once in a while, amirite?
So yeah, there's not really any rules set out in concrete just yet. We can all just go with the flow and if you're unsure about posting anything at all just ask. Seriously I don't bite. (Unless that's your thing, in which case I may bite.)
So basically just use your common sense for now.
For posting fic, perhaps you could go with the following format (no but seriously just use your own judgement here)?
Rating: Fandom: Pairing: Warnings: Summary:
The only requirement is it has to be pr0ny (although that can be subjective) and related to musical theatre in some way, so yes RPF is allowed.