Recently I was scanning for summer availability for VDH and saw that a garden duo room was available for the 4th of July weekend. However, when I got to the part where you choose the points to use, I found I was just short of points to be able to book it. So I scrambled to one of my other reservations to drop a day from it and then tried to get the 4th of July weekend again, but it was gone.

I thought maybe someone else had also seen it or the waitlist monster grabbed it, so I sulked and just kept poking around in other availability. About 15 minutes later, I went back to that room type and was looking at September availability but scrolled the calendar to July and the room was available again!! I'm guessing that it gets caught up in some hold for a bit of time, but then gets released if the reservation isn't scheduled. So, if you are hunting and see a room but then it slips away, check again in a bit because it might pop back up!