Question about rescheduling a trip

[memy26]

first off I'm sorry if this is in the wrong place, I really couldn't figure out where this would fit in.

Anyway we have reservations for this December. However things have now changed and we will be moving sometime between now and then (this is a good thing)

Thing is though with the move we just can't justify the extra money going towards the trip. So what I'm wondering is can we just move our reservations to another time next year? We would really still like in December and I know that the rates aren't out for December '10 yet. Would we be able to do this or would I have to wait until later this year to move it?

Thanks