Full Boulder camp sessions go to a waitlist, and the department contacts families as spots free up.
Per the city's youth-camps page, sessions that fill go to a waitlist and the department contacts families as spots free up. We watch the page for waitlist movement and alert members when a spot is reported open.
Updated , checked by hand against the target's own page.
Watched from bouldercolorado.gov, the target's own public page — not a reservation system we poll.