May I also add, that if peopel phone me to book tickets and ask if it alright for their children can come along, I always say "If they are well behaved and quite that's fine. It is your responsibilty to ensure that they do not spoil things for anybody else in the audience. If they misbehave, then I will have no choice but to ask you to leave".

Maybe it is the fault of the organisers, who do not seem to deal with the situation.