Like everywhere where animals are as an attraction: it is not animal friendly. I heard it can get worse in Sri Lanka but we stayed with 50 Jeeps some not even half full of people to get in at 5.30 in the morning.
The park is big but you always meet other loud jeeps everywhere. We saw two mothers and two children somewhere a little hidden and after two minutes we have been 5 jeeps watching them. I personally did not like the style, would never do it again anywhere.
But I saw baby elephants 2 meters away from me, so who am I going to judge?
The drivers english was none existent by the way.