I wouldn't do the sunset/night safari if you've never been on the safari before because, as mentioned, some animal are really hard to see. There isn't a lot of lighting in the animal enclosures at night. However, if you've already done the safari, then I would highly recommend doing the sunset/night safari. As others have said, the animals did seem to behave differently at night, with some animals being far more active than I've ever seen them (the lion and his two lionesses were actually walking around their rock and making soft roaring noises!).