It sounds like you may be spending some time on the road. If so then a KOA membership can be worth it.
At $24.00 for membership the 10% discount will take about 9-10 stays during your 1 year membership for you to break even. Membership makes it easier to register and gives you some priority over non-memebers, but I do not feel that these benefits make enough difference if you are only planning on 4 or 5 nights at KOAs this year.
It is hard to find a KOA that does not have a pool and wi-fi. After a hot day on the road a pool is a nice finish to the day. Wi-fi is a great way to keep in touch with family via e-mail. You don't have to make 10 phone calls a night to keep the relatives and friends informed.
Some, like the Mount Rushmore KOA are huge.
http://koa.com/campgrounds/mount-rushmore/ That place has 3 pools to accomidate the number of campers, but it is also one of my favorite. It should be on your route to Wisconsin and is centrally located for the Black Hills. They are big on movies and breakfasts. Even have horse rides starting from there and an Ice Cream store plus better resaurant of their own. Normally I dislike crowded campgrounds but I like this one. This is not one of those where you feel like you are camping in a parking lot. You'll need 2-3 days stay here if you are going to see the Black Hills, Deadwood and Custer National Park. The caves here are a nice way to go on tha hot day. Good luck on getting a spot if it is any way near the Sturgis motorcycle rally days. That is also well worth going to.
Wall Drug is next on your list going east. Great tourist trap and next to the entrance into the Badlands.
At the east end of the Badlands is the Minuteman Missile Base tours. This is a National Park and very limited as to the number of tours and the number of people who can get in each tour. Don't expect to get on a tour without a reservation.
http://www.nps.gov/mimi/index.htm You are actually taken down underground into a command bunker that controled 20+ missiles when it was active. This is way cool.
When you get to the Missouri River stop at Al's Oasis for a good slice of pie and right after you cross the river stop at the wayside. You are above one of Lewis and Clarks actual camp sites and the wayside has a nice museum with recreated river boat. Enjoy this spot as it is a long way over very flat land to the next place.
When you get 2/3s of the way accross Minnesota it is the Spam museum.
http://www.spam.com/games/Museum/default.aspx
This is right next to your route and easy to get to.
The sceneery by the Mississippi River and in Wisconsin will keep you looking. Enjoy your trip.
Gary
