We were there Nov 6-11. Basically nearly everything with animals shuts down at dusk. We were told by the CM that the animals have to be returned to their quarters. We took the last train to Conservation Station right after the parade, and spent less than 30 minutes out there, when we took the train back, they were closing everything in Africa, even the merchandise and food carts. However, much of Dinoland, ITTBAB, etc. was running, and they scheduled extra performances of Lion King and Tarzan, and some character greetings that are not listed on the daily entertainment schedule. If you go to guest relations in the park they should be able to give you the EMH schedule anytime in advance for that day(we did this at Epcot), well before they give out the bracelets, so you can plan accordingly. See any animal exhibits you want before dusk.
Personally, we would not go again for EMHat AK. We were just waiting for our DR at Boma.