Were you asking about possible holds once you check in? Or, after you've paid for your room?
I know that some hotels will do this. They may not charge you for your reservation at time of booking, but rather just hold the room for you with a hold on your card. Or after you've checked in, will still place a "security" hold on your card, in case there are any charges during your stay (i.e. room service, etc). Once you check out, if there were no charges, they release the hold, or the balance.
But, at Disney

....
If you have a resort package reservation, you shouldn't have any credit holds on your card, in addition to your payments for the package (which usually has to be paid in full at 45 days prior to arrival). If you have a room-only reservation, you should only have a charge for the first night's stay at time of booking. Then, when you arrive, they'll ask for you to pay the balance in full at that time. You should only be charged for your balance, with no additional holds.
During that check in, they will also ask you if you'd like to add charging priviledges to your room card keys (KTTW - keys to the world

), and if so, which ones should have it. If you do, then they will need to have a card to place those charges on. As some of the other posters have said, they will place a $1 hold first, then either charge the card at check-out, or once you reach the spending limit - which ever comes first.
Good Luck & Enjoy your trip!