The '24 hour' rule, which applies to most 'private members' clubs and not just casinos.

The fact that you have to be a 'member' or a guest of a member. The '24 hour' rule does not apply to guests. However, if there is a problem with your guest there is a problem with you also
I had a problem with a 'client' I took to the Barracuda Club once but as they know me and I was busy they just evicted the guy and told me about it the next time I went. I had assumed he left of his own accord