There are some times big price difference between 2 and 4 occupancy bids. Last December, when I bid at Casa Marina Key West, the difference was about $10, so I used 2A/2C bid, and did get a 2 bed room (this hotel is known to have many single bed rooms). When I bid my 7/3-7/4 stay at Holiday inn Chattanooga last night, it was the same $54 for either choice. Tonight the 2A/2C choice would be $140, while the 2A option remains $54 (using Firefox, IE gave $56). My question is: does the occupancy offer any garantee ?