We have two use years--June and December. In a way it's nice because every six months we get new points. It works well for us because we usually vacation in July/August and January. BUT, to be perfectly honest, it is a hassle to keep track of how many points you have in each use year, when they need to be banked etc. If you are very detail-oriented, you should be fine. Otherwise, I'd stick with one use year, if possible. Pick a use year close to when you usually vacation --that way if you need to cancel your ressie, you still have time to bank those points. For example, using my June points for a July ressie. If I had to cancel the ressie more than 30 days before our trip, the points could still be banked.Some people will say that the use year doesn't matter, but there are times when the use year plays an important part in your planning.