We can only guarantee admission if you have booked an online ticket for a specific time or if you reserved a specific time slot. The online ticket includes a time slot already, there is no need to reserver an additional time slot.
All other ticket types require a time slot reservation.
On site, entry is only permitted with a medical mask or FFP2 mask. In addition, for all visitors age 6 and up proof of a daily negative corona test (not older than 24 hours), a completed second vaccination (at least 14 days in advance) or a recovery (not older than 6 months) is required.