It technically is for GCH Resort Guests Use...now in practice it used to be that they only checked for rom keys before 11am to get into DCA then let anyone come and go after that. Since the security bubble change where they no longer let non GCH guest in through the front door they sometimes only check for room key at rope drop up through the first hour if even that and after that it is open to anyone.
Only restriction if in place is GCH into DCA...anyone can exit DCA in to the CGH at any time