I've never had casino credit. But I think if I did do it, I'd potentially talk to a host ahead of time and see what's up. Play it off like you're considering it but don't really want to do it...they'll probably try to get you to get it....then you ask what kind of perks they'll offer you. Then again, if I were in your shoes, I'd probably do the same thing and ask others what (if any) perks they get for having a LOC.