May I enter at 10:00 with a ticket purchased for 9:30, or at 10:00 with a ticket purchased for 10:30? Because there are not enough tickets for 10:00.

You can enter one hour in advance. I bought a 17:00 ticket and can enter the park at 16:00.

You can enter one hour in advance. I bought a 17:00 ticket and can enter the park at 16:00.