Age decides everything. Whether a six-year-old can use the course, and whether a fourteen-year-old would find it too easy, is checked before anything else, so publishing the ranges saves the enquiry and the disappointment.
Parties carry the money. A booking for twelve children with food and a room is worth many individual sessions, and that search happens weeks ahead with a date already chosen.
Adults look for somewhere that is not a gym. Obstacle training, ninja fitness and evening leagues belong to somebody bored of treadmills, and very few parks state clearly that such sessions exist.
Safety is searched openly. Whether it is dangerous, what the rules are and how injuries are handled gets typed by a parent, and a factual answer converts far better than silence.