Campsite prices are consistent all week long. I believe the cheapest spots are $16/night and the most expensive are around $24/night
Most camp sites can be reserved in advance , prices vary from ruff camping (no electricity) to more comfortable with electric and more choice location. You can go on line google national park camping and find the link that has .gov that website lists all the national parks and their reservation system and prices.
Ive never stayed overnight but when i checked its between $55-120 depends on the kind of hotel you want to stay at
Very affordable. Prices range from 19 dollars a night and up
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