Hiya Sally!
Have a super time - you and your camera will love it all - especially Bryce Canyon, Zion and Monument Valley.
I hope you get to meet Randy and the hilariously dry Gary at the Cody on your way to Yellowstone - great welcome and nothing is too much trouble for them. The Cody is a little way out of town but Gary will give you a lift in and pick you up later - there's a great steakhouse on the main street you should try - I can't remember the name but the guys will point you in the right direction.
Great news that you've also got a much smaller group than we had (....) so space out, relax and enjoy the amazing views.
All the best and hope you are keeping well
Mandy