[Réponse en anglais]
As far as we know, drones are not allowed to fly over the Natura 2000 area near Oostkapelle.
You can fly as a private person in the surrounding of Oostkapelle with a drone, if you adhere to the rules.
The current drone rules (for the surroundings of Oostkapelle) can be found on the website of the Dutch government: https://www.rijksoverheid.nl/drones.
However, the drone rules change regularly and are becoming increasingly stricter. We therefore recommend that you check regularly if current drone rules have changed.