Grab a sold-out campsite when someone cancels

Watch [campground and park] on Recreation.gov (or [booking site]) for [dates] — it's fully booked and I want a cancellation. I need [requirements, e.g. a tent site for four, or any RV site with hookups]. Each run, check availability for my exact dates and acceptable site types. When something opens, alert me immediately with the site number, the exact nights available, nightly cost, and the direct booking link — cancellations disappear fast, so lead with the link. If several sites open at once, rank them briefly: shade, distance to water and bathrooms, anything reviews mention. Also track near-misses separately: my dates shifted by one night, or a comparable campground nearby with openings — clearly labeled so I don't confuse them with the real thing. Say nothing on unchanged runs. Don't book; your job is getting me to the reservation page first.