The tree doesn't have a schedule on purpose but it's roughly every 20 minutes and inbetween that every 30-60 seconds something slightly moves on the tree like a tail or head.. I forget how many different animations there are. One is always right as it gets dark and there is always one at closing time. It's been dark about 5:45ish lately.
In addition its the same other stuff, some dining, dinoland and dinosaur, EE (awesome at night), kali (also better at night), the night safari which I recommend getting on so you hit the middle about dusk (15 minutes into the ride, fastpass takes 10 minutes to get onto a truck and start moving). What's missing right now is rivers of light but they've finally started showing it to castmembers so it's not much longer before it's out for all to see.