Good question! I thought I saw a post that someone saw that MNSSHP was starting on the 30th of Sep., I went on the WDW website and couldn't find it for myself, but I noticed that on the 29th, the MK closes at 6. I'm hoping that it could be MNSSHP! Anyone know for sure?
Although they do decorate it's nothing like Christmas. Mostly fall decorations. Main stret did have lighted pumpkins in the upstairs windows of the stores.
The decorations for the party are not out during the regular park hours. It looks completely different during the party. Could be the lighting, but there is more than lighting.