I book room only trips all the time, and have never, ever had that experience. If I don't pay in full before we arrive, they charge the balance upon checking in, but usually I am paid in full so they don't charge anything. On the folio that you get, it's broken out by nightly rate and each tax listed, but they've never put the charges through for each night individually to the credit card company. It's how the folio is tallied to zero balance for accounting purposes, not how you're actually charged.
They also do not charge the resort limit ahead of time. They either charge your card when you reach the limit, which then resets, or on the last night of your stay if you don't hit the limit. So you're only charged what you actually spend, as opposed to many hotel chains that charge a certain amount up front as a hold for incidentals. Disney hotels don't even require putting a card down on your room, and if you have one down and have paid in full and don't end up charging anything back they won't charge your card at all. I've never heard of an experience like the one posted above.