This is my first time posting. We are planning a trip for two weeks or more to go out west. We live in Indiana and want to see as much as possible. We are definitely wanting to see a few things. For sure we want to see St. Louis, Denver, Utah (not sure what), Yellowstone, and Mt. Rushmore. We are taking 9 and 14 year old boys. Should we make reservations for any parks or places? I heard about National Park Passes is that worth it and where can I get it? So please help fill in where else we should make sure we see. Thanks!