You used to be able to do this with no problem at all - they would even suggest it to you. Then, maybe a year or year and a half ago, they seemed to change the booking rules and it's much more difficult. Now you have to cancel and rebook, and can only book the change if it's available. I don't completely understand, because I know it seems like if you just cancelled a longer stay then of course the shorter stay i still available, but it doesn't work that way

I guess it has to do with them not wanting as many single or short openings in between longer bookings, that they are less likely to fill. At least that's how I was led to understand it. I was really upset when they originally made this change, as we would often book as long as we thought we could potentially stay, and then drop off a couple of days once we had my DHs work and call schedule finalized. He doesn't always know it months and months in advance. I feel for you, it would be very aggravating to see your dates available where you want to stay but not be allowed to book them. Have you tried calling and asking? It can't hurt, and maybe if you got the right CM they could either do it, or talk to a supervisor and get the override approved. it' can't hurt.