govols61 - it is a GREAT road trip. Here are a couple of links that will help. You MUST pay attention to the roads into and out of the area. That is the first link. The second link has some great interactive help for things to do and see.
We stayed at a number of campgrounds but really enjoyed Buffalo Bill State Park - very close to Cody. We got to Cody just in time for a huge Native American Pow Wow. It was super for our grandkids.
Enjoy!!
Link #1:
Road to Yellowstone
Link #2:
https://www.yellowstonepark.com/road...tone-road-trip