What are good things to prepare for an orgy?

It seems there's a lot of issues with planning an orgy, especially if you don't know all the participants.

A lot of people opt out the last 24 hrs, several are either nervous or creepy, and many (especially ciswomen) seem to feel unsafe.

I'm thinking a lot of this is due to orgies being poorly planned and hosted.

What are your best tips for a good orgy? What do you appreciate at one?