If e.g. parents want to bring their children to the campsite with a caravan but do not have a ticket themselves, they must pay a full festival ticket as a deposit.
In exchange for the deposit, you'll receive an escort-pass, to expel yourself when asked to. This escort-pass will be exchanged for the deposit when leaving.
After receiving the escort-pass, you've got one hour to deliver the guests.
Every further hour costs 25€ .