My mom's favorite part of the whole trip was the Wgasa Bush Line Monorail. It's a guided tour on a train-like ride that lets you see what the wilds of Africa look like. We got to see lots of baby animals including a one day old baby black buck. On the tour the guide tells you about the different animals like if they are endangered or not and stuff like that. If you like animals, I'm sure you'll really like this place.
Closing times vary by seasons.
They also offer yearly membership rates which are a great deal if you go more than once or twice a year. June to August.