As ever, it was a quest for information. I also have a quest for information. It seems to me unduly restrictive to apply the clause simply to musical events. What about theatrical or other events which draw large crowds? The danger of either panic or direct harm from fireworks or similar things in such large, crowded places seems quite high. There is this careful definition of,
“sleeping or other facilities for those attending”,
a musical event. Surely concerns about someone possessing a pyrotechnic article in a general campsite or some other facility are just as great.
It would therefore be helpful to understand. The purpose is clear and valuable in terms of musical events and festivals but I wonder why similar consideration has not been given to other events where there will be large gatherings of people.