We just got back today. Sunday (Jan 9th) was an MGM EMH night. I didn't go to it, but my 2 teens went. They said it was completely dead...all rides were walk ons.
MK's EMH night was the same thing. Fantasyland was probably the most crowded of all the lands, and they were still issuing Fastpasses for Pooh and Peter Pan, but the times were for like 10 minutes later. HM and Pirates were walk ons (absolutely no waiting).
AK's morning EMH is a total waste of time!!! I got up early to get there by opening and the ONLY ride open was It's Tough to be a Bug. Also that walking path was open...that's it!!! They wouldn't even open the "lands" until 8:45am to stand in line! But still, I ended up doing everything I wanted to do at AK and got finished up there by 11:15am. Everyone was PO'd!! Why bother to get to AK early if you can't even ride Dinosaur or the Safari??? There ended up being only 10 minute waits for Dinosaur, the Safari, and Kali Rapids, and we got in at the last minute for the Lion King show.
Epcot's EMH night lasted until midnight. The lands still closed at 9pm, but the big rides in Future World were open until midnight. I didn't stay for Epcot's EMH night, but the teens stayed and they said it wasn't crowded. They had to wait about 5-10 minutes for Mission Space and there was a 45 minute wait for Test Track, but they had the FastPass going so they got a FP for it.
Let me know if you need any new info.
Mary