Backing up.... parking is paid for with the Resort Fee. The Resort Fee is charged directly to guests who booked room-only (is about 13.80 per night of the stay, you pay it on checkout), is hiding inside of the total charged on a package deal, and is somehow included but not seen (probably paid for by dues) for DVC people staying on points.
The Resort Fee includes parking, newspapers on weekdays, the fitness center, and so on.