My child's class is going on a school trip soon and I have just learnt that the children are staying overnight for three nights in groups of around six in caravans. On their own. Teachers have a caravan each nearby. I'm quite worried about this as the holiday is on a holiday park and it is down to the children to lock their doors. Gas will be turned off in the caravans. We have already paid for the trip. The children are 10 and 11 year olds.