I don't know what the relationship is like, but I would think Disney would be at least partially willing to discuss loaning out movies for HHN. After all, MNSSHP doesn't draw from the horror aspect. It would just be more money in their pockets at the end of the night.
I still didn't care for it, but to be fair, the EP line was bonkers, and while we were in line we found out that our dog died, so we may have just been in the wrong mindset going in. It was one of the more interesting to look at, I'll give it that, but I didn't find it scary so much as confusing.