RC Sobe seems to be more strict about making sure that those in the Club actually have the right to be there. I've never brought a guest in at that property though.

In genereal across the RC system...
If you do not abuse the privlege by shuffling guest after guest in there and if they arent too loud, dont take 5+ trips to the buffet in 30 minutes, dont appear to be getting hammered off the free booze, etc...then they are usually tolerant and usually very gracious/welcoming about accomodating a guest or two.