RE: AMA Safety Code 2c - Your Interpretation?
Deland Golden Hawks are within that distance of Deland Municipal Airport. They operate with a permanent 400 foot restriction and when they have events like the Festival Of Giants, they get a lift to 750 feet for the event window and a NOTAM is issued for the event days only.
Otherwise it's presumed that they are operating at or below 400 feet and the airport is well informed that they are there.