Awesome tool. But I wish your site monitored Zion NP. One of the busiest parks in the US. I can never score a campsite, and the first-come ones fill up by 7am.
It does. You will want to search for "Watchman Campground"
Just throwing this out that you should definitely include the park name in the search. I would have never thought of that. I just checked recreation.gov API and it has all that info there. Moreover, if a park has multiple campsites you could include all monitoring in that search.