I was there and it wasn't great. I'd never been there for Halloween before but I was actually really disappointed.
There wasn't all that much going on - Disney Dreams same as ever and the Halloween parade was the same as the rest of the week. The parade was also super short.
There was a show on the river boat themed around Facilier and Tiana which was okay but there were so many people! And people were extremely rude, just pushing everyone out of the way and standing in front of us while we were watching; many people also had diadems with light-up things on their heads which was incredibly annoying if you're trying to watch a show.
There was also an obnoxiously loud party going on around star tours but it was so loud I couldn't even hear my friends talk anymore. The villains were disappointing too, the same as during the day and they were all on the plaza around the sword so you could barely even move, let alone see where they were standing. It began with Maleficent going on the balcony of the castle and saying some stuff so we hoped there would be a bit of a show but there wasn't.
The new Disney friends were pretty cool, there were the 3 Caballeros, Russell, Carl and Dug from 'Up', the kittens from the Aristocats and Darkwing Duck, Dagobert and the pilot duck (forget his name). But there were also a lot of people around them and there was no real queue, just a crowd pressing around them so people kept cutting in front of us, in the end we only took a picture with Darkwing Duck and tried to take photos of the others from a distance. But it was SO dark the pictures are super-bad.
In general I'm just disappointed that there wasn't more to do. Especially for adults it was pretty lame, and not worth the 37 euros in my opinion, especially d-since it was already our 3rd day in the park and queues were longer than ever with all the rides in Fantasyland being closed for Disney Dreams. I'll try to post pictures later but didn't get many :/