This will be our 4th year going to Anchorage at the end of April with the RV for the state championship swim meet with DS. Only RV park open is the Golden Nugget. They have year round campers. Not much to look at when it is covered with snow, but the showers are very clean and they have full hook ups. There isn't much snow in Anchorage this winter, most likely be long gone by May. Most state and federal campgrounds open Memorial Day weekend. When the snow is gone many of them allow camping free of charge until then, but no hook ups.