We went last year at the end of Sept. Went to MK on a Friday. No lines at all and they were showing spectro that night. I walked right on to Space Mtn, absolutely no line. Weather was very hot to me but not bad to my husband and we live in Florida so we're used to hot weather. This year we went at the beginning of Sept., after Labor Day. During the week, there were no lines and you didn't need PS to go to restaurants like Chef Mickey's. My dd was able to ride Dumbo and teacups several times without getting back in line and many of the rides like Pirates and Small World had empty boats. Epcot was deserted until time for Illuminations. MK was busy on Saturday though and my dd and dh had to wait in line for about 20 minutes for Dumbo. It was hot but didn't seem as bad as last year. Great for swimming.