Everybody needs a ticket. Children who are younger than 12 during Crammerock need a kids ticket. Concretely: children born after 7 September 2012 must have a kids ticket. You can only buy this ticket in the online ticket shop. The proceeds go to charity. You can buy these tickets via the ticket shop. Have you already ordered tickets and you want to order another kids ticket? You can do this via 'My Order' at the bottom of your confirmation email.