They just started doing this a couple of years ago. If you opt in for charges to your room, the 3 Deluxe hotels hold $200 a night against your credit card on file. So, if you stay for 7 nights, it's a $1400 credit hold on your card. CBBR is $100 a night (I don't know what the hold rate is for Sapphire)...My guess is that some guests were running up charges to their rooms and not paying them, thus the hold policy. Just a guess though...They will ask you when you check in, if you want to be able to charge to your room. You can opt out if you want.....Some people go pretty crazy charging stuff at the pool & pool bars (and the stuff is expensive with 18% service charge plus tips), so I can see why the amount is so high at the Deluxe hotels. CBBR being a family value hotel, guests are probably more conservative with their spending.