Under 18 Frankfurt Deutsche Bank Park?

If you’re at least 16, you can go in there alone.

From AGB of the organizer:

3. Access rights / protection of minors

3.1 Children up to 14 years of age may only attend concerts accompanied by a person who is also in possession of a valid ticket. Young people between the ages of 14 and 16 are entitled to admission for concerts up to 24:00 with the permission of parents and accompanied by a person or guardian, each with a valid ticket. The corresponding written permission or Ordering must be demonstrated upon entry. For young people from 16 years of age, admission to concerts and musical performances is permitted until midnight without the assistance of a person or guardian. In individual cases, different age requirements may apply (e.g. due to the requirements of local authorities or the type of event), as referred to in the ordering process and on site.

‘Education Commissioner’ may only be a person meeting the following requirements:

full year,

maturity to provide a child responsible for the necessary support at the event,

to ensure the child’s return home.