I'm planning a trip to the next year the likes of which I've not done yet. Looking at Michigan, Wisconsin, Minnesota, South Dakota... you get the idea. My question relates to planning overnight stops. When you've done extended trips like this, did you make reservations well ahead of time assuming you'd get there on the designated day. Or did you "wing-it" hoping to find vacancies as you traveled about. I'm open to some camping, but not every night. I'm curious how others managed what I see as a possible dilemma.