Halloween Party Dates and Other Parks

[brad813]

For Epcot and Hollywood Studios, specifically, how does MNSSHP affect the overall crowds in those parks? I am going next month and one of the dates I still have open happens to be a party date, and I need to know which park is more likely to see an increase(of those not attending the parties) due to the party on that particular day. I am aware that Epcot has evening EMH that day and the Food & Wine Festival will be going on.