If we can offer some advice it could be better to arrange for your Group to bring all their camping equipment in a trailer and all young people to arrive by Coach if you have a long distance to travel. This is the fastest way onto site.
The next best option is for the camping equipment to arrive in a van or trailer and all young people to arrive by passenger van if you are more local.
The hard way is bring the camping equipment in leader’s cars and the young people being dropped off by parents in their cars.
We can cope with all options however less cars means less traffic, less queuing and less stress – which is better for everybody 🙂