This is more a hypothetical question. Let's say we book a value with FD. Check in and find the resort is not our thing, for what ever reasons. What happens if we go to the front desk the next day and nicely say " sorry this resort is not for us" and ask how much difference an upgrade to a moderate would be??? Taking whatever was available. To make it more tricky. Would they still roll-over a discount% ( FD or room only) if anything was available or check if your % was also available. ??? Where you might forfeit your FD or %???