Now I ain't looking to set up a rally but if anyone was looking to start an Iowa area rally I think I found just the campground for you
Amana Colonies RV Park
This park is huge.
Gravel roads and sites with well kept grass.
Park wide FREE WiFi and it is fast. Using it right now.
No cable put about 8 TV channels on the antenna
Full or EW hook ups
AND They are Passport America
Close to Cedar Rapids and Iowa City
Read more about it at the above link.
Just a thought, just in case someone wanted to Wagon Master a rally in Iowa.