As long as the hut is opened, it is serviced by the hut guardian (hut warden). If it is closed, e.g. during the winter months, only the shelter is opened to visitors. Therefore the hut and shelter capacity can differ, e.g. there might only be part of the hut open in winter. The hut chief is the person managing the hut infrastructure, but not serving on-site. cuisine: non_catered is supposed to mean that the cooking facilities can be used by people to cook their own food. If it is catered, it will be cooked only by the hut guardian, people can not cook their own. half_board = yes is supposed to mean that there is dinner and breakfast included in staying a night (at the served hut). The terminology is take from the potentially not perfectly translated SAC pages https://www.sac-cas.ch/en/huts-and-tours/sac-route-portal/zapporthuette-sac-2147000298/mountain-hiking/