For is it seriously being suggested that is impossible to ensure an adequate level of safety for these people (and others) and that the only answer is to deprive them of such visits? I hope not.

I have just thought of an example where the balance between benefits and risks would be different.

Casual visits to the front-line in a war situation would involve more real risk than could be balanced by any benefit that might be gained and it would be sensible for such visits not to take place.

I have not visited this event and even the worst accounts that I have read here do not lead me to think that it is (yet) a senario comparable to a war zone.

A view which places every potential risk of a musical gathering before its benefits, is not a balanced view and it is one that will not result in the sensible regulation required but will result in the type of over-regulation that we all suffer from.