If you have not reached the required minimum age by the start of the event, you will be refused entry. If you reach the minimum age during an event lasting several days, you will only be allowed entry from that day onwards. In a few cases, you will ...
As a rule, there are various options available from the organizers. For example, you can create/purchase a discounted or free ticket. In some shops, this is already predefined. Alternatively, you can contact the organizer directly to find out what ...