Pete, how many days were in the park for? I am going to be renting a car in Las Vegas I think for about 3-4 days. I plan on shooting Tmax black and white ISO 400 and a roll or two of 100. I'll be shooting slides as well with some Kodak Elite Chrome. I think I'll shoot some print film as well. Sounds like a lot but altogether maybe 4-5 rolls? I still plan on shooting a lot with my D700. I'm excited to use some of my nice glass with a film body like the 14-24mm. I just want to make sure I get some great shots from this trip.
This is a few years ago, and was maybe in the area a couple of days and stayed in Moab, I really want to go back some day, hope to bring my son along this time. And Kanuck do't just try to stop at the Monument Valley, you have to and going back from the Moab area actually stop close to where Tom Hanks stopped running in the movie Forrest Gump, that is a view like no other view that I have ever seen
Actually going from Vegas you could make a very interesting drive to the Arches National Park and that would to be see a few things in the south west part of Utah, Zion Park and Bryce Canyon they are both in close to the path you are on to get to Arches National Park and then go back to see the Monument Valley on way back to Vegas
Anyway have a great trip, wish I was going along with you