Do I need to book in advance to visit Centraal Vlieland Park?

Quick answer

No, advance booking is not required as it's an open-access park.

Since Centraal Vlieland Park is a public and free natural area, there is no need for any advance booking or registration to visit. You can simply enter the park at any of its access points and explore at your leisure. The only bookings you might need to consider are for the ferry to Vlieland itself, and any accommodation on the island, especially during peak season.