The $35 admission fee includes all National Park Programs, access to the shuttle buses, hiking trails, and ranger walks and talks. It does not include any 3rd party things like food, airplanes, helicopters, tours (though some may include the $35 in their tour fee). The skywalk is on native American land, and only accessible via one of their tours. (Note, this is a several hour drive from the main South Rim national park visitor center)
It does not include the skywalk. It includes the hiking trails and shuttle buses. It could include other things but I am unsure as we did not do them. Hope this helps!
To be honest I don't know. I was in group with all included
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