I have let two people in. Once there was a fight with a fullfare paid FC person (Domestic) in ORD. I told the person, he is my guest.. and they said" You know you are responsible for him" I said, "yes thank you..."
They do not like when you do that, but I do not think it is worth the fight.... I have a membership (paid for by miles from business traveling..not my own pocket) .. so I do not mind sharing the priveledge..

If anyone is ever around, I am always able to let them in... especially to friendly cute gals..
LOL.. I also let another guy in when he was behind me in a flight that was canceled... we both went in the RCC (him as my guest) and we both got new flights...
I am not a RCC snob, just appreciate it and love sharing the priveledge