In 2003 we had a late February trip all planned (we had only decided on it during the Christmas Parade). However, after a little over a month the waiting was getting to be too much. I went to work on Friday--- asked if I could move my vacation up to that very next week and we left the following morning. I can honestly say it was our best trip too.
We've done lots of other trips like that, just not to WDW. There has been at least a dozen times in the last few years I called DH up at lunchtime and we were on the road that evening to some destination.
I have no patience, so I don't like to have to wait real long for something. I'm on vacation May 4th- May 15th. I'm going somewhere-- don't know where yet. I have a huge airline credit and several ideas for both flying and driving. Just don't have a destination set yet. We'll see where we end up. I don't think WDW though-- DH and I are going there for our first ever trip alone this August.