Look, in two hours, one will see hippos (a pool of 100 hippos is on the route), crocs, probably elephants and all sorts of interesting birds. The hippos may well be walking on land. While there are always a number of other boats on the river near town, the experience is a good one as the boats are all small boats and do not get in the way of each other. I guess one issue is that the National Park has excellent viewing (impalas, antelopes, etc.) whereas for much of the trip one has Namibia with its cows and houses in the distance on the other side of the river. Do it!
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