I've led several groups to Moab. My favorite part of these trips is watching my friend's reactions to the vast landscapes.
There were quite a few people on spring break. We met people from all over the country. Most everyone was on blinged-out five and six-inch full suspension rigs. I only saw one other singlespeeder. To my surprise, I received several derisive comments on the combination of 29" wheels, rigid and singlespeed. Apparently that's not the proper bike to ride in Moab...
My default gearing of 32:18 suited the fast, flowy trails of Fruita. I did switch to 32:20 for the steeper grades of Slickrock. With the exception of several sections of Moore Fun these gearings made everything rideable.
On the way back we stopped at Spot Brand HQ in Golden Colo. to meet and greet the nice folks building my new ride. Gavin, Spot's product manager, was nice enough to give us a tour. Lots of cool stuff in the works!