First I wanted to thank all who helped with our route from IL to West Yellowstone and the recommendation of Grizzly Rv Park. We had a great time and the route was perfect. My husband also wanted to thank those who helped us out. Grizzly secret is out! People have found this park and are trying to show up with no reservations. They for the most part can't get in... we booked last October and glad we did. I spoke with several in the registration line trying to get in and couldn't. So If you plan on going to this park book well in advance.
Also we bought the annual national park pass and it worked great. I liked that we could use the express line when entering the park. Also this is an interagency pass so you can use it for federal lands. Thanks again to all who helped us out! Great trip less my car tranny frying.