I don't know what to think about the after hours event. It appears it's not going quite as well as Disney wanted it to, as far as selling well. On the other hand many people are happy with the low # of attendees. Right now I'm leaning toward them NOT extending it.......whether they extend it or not I'm positive they'll extend Nov. park hours though. Last year when the Nov. crowd calendar first came out it had NO Wishes/MSEP/Fantasmic shows scheduled and early closings on many nights, including the week of Thanksgiving. Eventually all the shows were added and hours were extended, both early and late, around Veterans Day, the race, and Thanksgiving week. I know it wasn't until after I made my ADR's in late May and the hours changed right up until like 3 weeks before our trip so it kind of sucks for planning, but HS stayed open until 10 a few nights, Epcot pretty much stayed the same except for EMH, MK didn't close before 11 that whole week. Most parks beginning the Sat. before Thanksgiving opened at 8 with the exception of Epcot and 1 or 2 other exceptions here and there.
If they do extend the after hours thing I would hope that, on nights MK doesn't have EMH, they'd still keep it open until 11 or 12 but I guess we just have to add that to the huge list of unknowns right now