I would try splitting up the dates of your stay (try 3, 4, 5, 6, 7 nights followed by whatever you need to make up the rest of your trip). For example, if your dates are Nov. 1 - Nov. 11, try plugging in Nov 1 - 4 and then Nov. 4 - 11 or Nov. 1 - 5 and then Nov. 5 - Nov. 11 and so on. Depending on how they've placed rooms in inventory, in order to cover all of your days, you may need to do a split stay. If you can split up the stay and find the same resort/room category for both reservations, you may not have to move rooms, but it's quite possible, you may have to consider a split stay in two different resorts or room categories in order to cover all of your dates. You may also want to see if Swan/Dolphin has any availability.