Again, I argue that nature and the established human residents should be seen as a seamless whole. We cannot isolate Uluru from the people who have lived there for thousands of years and who still hold it sacred. We cannot respect Uluru and show disrespect for the Aborigines. I would give the Uluru tour a grade of four. In the case of Yellowstone, the key issue is again carrying capacity.
Ecotourism can destroy ecotourism.
Another important issue is feeding wild animals, a no-no in any ecotourist ethics code. As the snowmobile picture shows so well, intensive human intrusion disrupts habitat and natural activities. I doubt that any Yellowstone visitor can score much above a five on a green report card. As a luxury hotel, Hayman may get a high grade. But Hayman and other resort complexes like it want to be seen as gateways to pristine and sensational natural settings as well.