Well, it wasn't Disney, but we once booked a Royal Caribbean cruise 4 days prior to sailing! That was in 2007. Brother-in-law was coming in from Hawaii and wanted to take his daughter on a weekend cruise, so he called the day before they got in, which was Sunday when he called. We wanted Disney, but of course it was sold out. Got the last three available cabins on RCI for that Thursday! Talk about mad packing and planning!