You mentioned the shoulder seasons, even those are short in some of the areas you are looking at. There may still be snow on the ground and freezing nights into mid-May. And there will be freezing nights and snow as early as late September. Many private parks close before October 1, so in the UP and Northern WI, the season can be quite short. There are several parks in the Manistique area of MI That are nice and also Rapid River, MI. Northern Wisconsin, the UP of Michigan and Norther lower Michigan have some great state parks and US Forest service parks as well as private parks, and that is a summer tourism area for the Upper Midwest. Many cities or counties will also have RV parks at a reasonable price also. Do not miss the Apostle Islands and Door County in WI, Porcupine Mts in the UP, Houghton-Hancock-Calumet area, Tahquamenon Falls and The SOO Locks, Munising National Lakeshore, Fayette state park restored smelting and shipping community, and by all means, Mackinac Island. Make sure you have a Pasty somewhere along the way and while in St Ignace, try a burger at Clyde's Drive-in. You will be better served by moving to a new area every couple of weeks as you will be able to see more. Hope this may help, Happy Trails Bert
