Practically everything was open Friday night. One thing I know for sure that was closed was the tent in Toontown. But, we found characters all over the park, so we didn't think anything of it.
I don't think the train was open, the stairs leading up to the Frontierland Station were roped off. Tom Sawyer's Island was closed, but I think that closes at dusk anyway.
Aladdin and Small World are closed for rehab right now.