I love the idea, but it did not come out as good as I thought it would.
Letting people, children and adults, walk around freely with the butterflies without any staff nearby monitoring it did not seem to work that well the day we were at the park.
Both children and adults walking and climbing on rocks and similar outside of the marked path to be able to catch and pick up the butterflies, several butterflies with injured wings, escaped butterflies outdoors and more.