We haven't used credit cards in quite a few years - stopped right after I received a $5500 Amex statement from a wdw trip. It was an extended stay back when DD19 did workshops and dance nationals in Orlando every summer. During the time we were away, I was very careful to be sure I knew what the closing date on the statement was and coordinated our hotels check-in/out to be sure they'd fall on two different statements.
I thought I had the caught the mouse by his tail and we ate very well b/c we'd be able to pay half each month instead of all of it on one statement - until I got home...
Imagine my surprise when we returned to find that they'd chosen that particular month to switch our statement dates and I had just two weeks before the entire bill of $5500 would be due in full.
That's a check I still remember writing because it was so unexpected all at once. It taught me a lot. We only use our debit card or cash for vacations now and don't use CCs at all anymore. We've stayed in all levels of resorts, and cruised as well. I've never had a problem checking in with a debit card.
Sorry you got caught in the old "switcheroo" - something the CC's are doing even more frequently now.. Look on the bright side - you don't have to devote your life to monitoring what kind of tricks they have up their sleeves next..