It appeared to be all straight singles / couples and this went on inside a private home, and the rules seemed restrictive enough to prevent any craziness from breaking out.
I think it would be kind of funny to suggest this at work when they ask for suggestions on how to improve morale...
It is a dry run orgy and the Lord ain’t got that on His list of things that we are to do - He has sent fire from Heaven, destroys nations etc for sexual immorality. He said pick one of the opposite sex, be faithful, keep eyes, hands off what’s not yours.