If you aren't able to go on safari, or are short on time in Nairobi, this is the place to go. We lucked out on going during the week when the park wasn't so crowded. We had some good sightings, including rhinos. It's best to go early in the morning to get the best sightings. There's a little snack shop/cafe at the entrance, but I would recommend you bring some snacks along with you. Bring also your binoculars and guidebook to identify all the wildlife you'll see!