Out of interest, as a foreigner/outsider in this and therefore not aware of some of the cultural sensitivity...
Why isn't price used more as a tool for demand control?
For more info/background on the US National Parks you might want to check out the Ken Burns documentary on the National Parks:
https://kenburns.com/films/national-parks/They were/are intended for use by "the people", so limiting attendance via price would not at all be in keeping with the original concept/intention. I feel the same as Bob on this issue.
