I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Dunskey Castle is a short 20min walk from Portpatrick along a public footpath.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 21/09/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.