Ok here's the latest and last reply from them. I do not plan on replying.
gotta love the wishwashyness of the whole thing.
You cant, you can, and now its technically you can't but if you can go for it....
Again I'm just gonna contine you to wait it out and see if I get an email or not and see if my FP+ gets deleted or not.
Dear Dee,
Thank you for contacting us back at the Walt Disney World® Resort.
Historically, we have allowed guests possessing tickets for Mickey's Not-So-Scary Halloween Party to go into the park as early as 4:00pm. However, there is no guarantee of this, as if there are times the park capacity at 4:00pm doesn't allow for more guests to enter, we will hold Not-So-Scary attendees to hold at the gate until it is safe to allow them in. Technically speaking, Disney's FastPass+® selections are not available to be made for Not-So-Scary (and our other special event at Magic Kingdom® Park, Mickey's Very Merry Christmas Party), since the party capacity is restricted, thus negating the need for FastPass+ selections. However, from time-to-time, the system will allow selections to be made before 7:00pm. There is no guarantee all tickets will receive that, as they are programmed to actually not provide that benefit, so if you are able to build them, please feel free to use them! Just keep in mind, though, that even if you possess a FastPass+ selection before 7:00pm, there is no guarantee you can use them, as it also depends on when you can get into the park.
I hope this clears up the confusion, and we look forward to seeing you soon!
If you have questions or need further assistance, feel free to contact us.
Sincerely,
Emilio Dietrich