My husband and I are senior citizens planning our first trip to Yellowstone Park the middle of June. We are flying into either Salt Lake City or Denver (suggestions?) and will have at least 7 days to sightsee. Are there any complete itineraries anyone would suggest, starting from the drive from the airport through the rest of a visit? I would love to have suggestions for areas to stay each night and we want to make sure we see and do as much as possible. While we are not intense hikers, we do like to walk and just love sightseeing! If anyone can assist with details, it would be so much appreciated!