If SD maps the bird sanctuary to include the beach then I wonder if they're right - though their data are usually quite good. Perhaps the limitations only apply from a certain given altittude? And/or a temporary exception ("derogation") has been granted? Check AIP and NOTAMs!
I count on Sam to chime in soon, to explain it all. He has a tradition of knowing what he is doing, even if not everything and everybody is under his control
