We were there Sept. 25- Oct. 8.
We did evening EMH at each park during the Sept. week, and re-did Epcot & AK during the Oct. week
MK was GREAT! We rode so many rides, and many of them we were able to go right back on again. We also found a few rarer characters we were looking for. As a bonus, they previewed the Happy HalloWishes fireworks that night. We went right after dinner, and stayed until closing, and managed to ride more in that time than we did when we spent a whole day there the following week. The weather was more pleasant at night too.
AK was also nice, particularly for DD7. We spent the day there, then went for dinner at Boma, then returned until closing. The park was practically empty. Like Eeyore2003 & mrsmagic said, not everything is running, but what was had no lines. DD loves Primeval Whirl & was allowed to stay on for 6 times before we dragged her away. We went back again the Oct. week - we didn't stay as long, but the park was practically empty again. It was nice to see AK after dark.
MGM - we went over for our first night there, but can't remember when we got there. Were able to do RNRC & TOT each 4 times in a row. I know we did a few other things with no lines. We were tired, so we didn't stay very long that night.
Epcot was the only park that didn't work well for us for evening EMH. The Sept. week was very crowded, and they weren't running FP. Waits for Soarin, TT, MS were all well over an hour, so we skipped them. We did a few things, but didn't stay long. The Oct. week was even worse, so again we didn't stay.