We went Oct 7-14 last year, and the weather was awesome. We found the crowds to be great as well, with the exception of Epcot's World Showcase due to the Food and Wine Festival. The buildings were empty, but getting to them was a pain. We also went Sept 17 in 2004 (between two hurricanes!), and it was empty (probably due to the hurricanes!). There was only one day where it was miserable - Epcot (of course!). It was 104' according to the car temp guage. We had to keep stopping to wipe ourselves down with napkins! haha We're planning for the last week of Sept this year as well. We love Epcot, so we're hoping to spend time there before the F&W starts.