I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Taking off from castle grounds is not permitted, but you can take of from grass area outside Inveraray Inn.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 16/03/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.