I have had a really weird booking issue pop up today and about a week or so ago. In both situations I tried to book the rate listed as Non Refundable Honors Discount which is one of the advance payment options which was the least expensive of the advance pay options (aka cheapest rate available) and in both situations I would add credit card et al and get the message about being unable to process - please check your credit card number and address. Didn't work with multiple cards which made no sense so I eventually in both cases chose the slight more expensive AAA Prepay and its sailed through no problem in both cases. Normally I wouldn't post but I did waste about 20 min and cannot for the life of me understand why I was unable to book the other rate.