I have a similar predicament...and have looked into it. It is only a few nights per week. It costs extra to get in... I think about $45 per person. You have to leave the park at 6 with all general population or buy your ticket and get a wristband (not sure if you still have to leave for an hour (I'd doubt it as that is a waste of time for everyone and by the time you clear out the whole park it's gonna be an hour anyways).
There is not a spectromagic or wishes but there is because there is Hallowishes and a Halloween themed spectromagic parade and a Halloween themed villains stage show at the castle.
As for it being fun......
The wife and I were discussing. On one hand how often do you get to one of these special events....also the parade, and villains stage show seem unique and fun (fireworks are fireworks really) On the other hand, not all rides are open, there is trick or treating but we don't have kids, there are dances and costume parties and we don't really dance and wouldn't go to a costume party cause we're all about the rides.
So, it sounds fun to families but would you pay an extra $50 to hit the park from 7-12 in addition to the ticket you already bought for that day to see a parade and show?
Those are my thoughts and I'm not sure whether we are going or not yet.:animwink: