(Before MGM-Mirage went over to the mlife system, if you were given rfb as part of your offer, it meant that all charges for beverage and food charged to your room were comped^. [Since there was NO comp account to draw on first.])
BK, thanks for the info, so in Harrahs system, RFB, just means maybe for some stuff--unless you play a lot!
PS: In AC, the VIP check-in.check-out people, seem to have lots of "clout" as to what complimentaries you receive.