We had relatives cancel on us for a May trip, so about six weeks ago I called up about going October 12-17 instead. There was no availability at BCV, VWL or BWV. We waitlisted at all 3, for only the entire trip, and within about 3 weeks, we had ressies at VWL. I wouldn't do the day by day thing because you really don't want to move resort to resort unless you have to.