Nightowl - sadly, in recent years, my colleague's two young granddaughters were indecently assaulted by the man employed as Santa Claus in a well known department store.
I don't recognise the picture painted of the UK as elf n safety mad, not allowing our children to explore or take risks. In our area local schools still take children on outings, with parents/friends along in support. The church runs various groups for youngsters of all ages, the play ground at our park is used by children of all ages. Being more aware of the fact that paedophiles come in all shapes, doesn't mean we all feel doomed and want to dash off to live abroad.
As for the OP, like others, I wonder if something has already worried the organisers. I expect the policy was in part driven by the organisations fear of litigation if anything happened on its grounds. The news last night included a piece about a former Army officer, who was scout master to the children of serving officers. The armed services may be included in the inquiry into child abuse in the BBC, Health services etc. The man was convicted of historical abuse of a number of boys. One of them told the BBC he thought about this man and the abuse he'd suffered, every day. That happens for many people who experienced abuse as children.
I am aware that the type of abuse these boys experienced isn't likely to happen during a one of visit to an amusement park. Recent high profile cases have led to growing awareness of the levels of child sexual abuse in our midst. Sex offenders look like you and I. They don't have horns, or a tail. I think I'm repeating something vampirequeen said earlier.