gatsby said:
I don't think that guests have sex with Heffner's (playmate) employees because that would be prostitution.
Actually, that's only if money is exchanged. If they have sex for the sake of having it, then it's of adult consent and not prostitution.
I'd imagine Hef could set it up for someone to pay to get in, like a cover charge to this "nightclub" and if someone were to "just happen" to have sex with someone else, well... that's just Hef making a safe environment for sexual encounters, not necessarily a whore house.
Always remember though, some celebs are immune to the law... for some strange reason, maybe it's the money. Nah! It couldn't be.