Backcountry Cabins - Wrangell - St Elias National Park & Preserve (U.S. National Park Service) Cabins are available on a first-come, first-served basis. If you plan to stay in one of the first-come, first-served cabins, you should bring camping gear in case the cabin is already occupied. During the summer and especially during hunting season, the cabins are extremely popular, so be prepared for the cabin to be occupied. It is not appropriate to ask to share a cabin with occupants who are already there.