Ontario to Alberta using US 2

We are travelling to Alberta form Ontario,planning on crossing at Sault Ste Marie and taking US 2 across to Minot ND before heading north to Canada again. Looking for tips on where to camp and thing's to avoid along the way.Plan to do a mix of Casino's and campgrounds for overnights.
Thanks Mike

We usually travel US 2 also. Here are a few places where we have stayed:
http://www.topothemorn.com/camping

Grand Forks Campground in ND

in Moose Jaw: http://www.prairie-oasis.com/