I tried to do that first, but it said 'to change the dates, cancel your reservation first and then make a new one'. I didn't do it for fear I'll lose
everything.
Originally Posted by
VA1379
Go to your original reward reservation for 3 nights and modify the dates of the reservation to include 4 consecutive nights. You should be able to do this if there is standard award availability for the 4 nights. Then, you can cancel your reward reservation for 1 night.