Bring plenty of batteries and memory cards for your camera (or, bring along the laptop and download cable, and blank DVDs to burn to).
Moab's another one on the "Ultimate Dream" list for NE guys like us, and I got to fulfill that one in 2008 (But I'd love to go back again). Spent the entire 25th Anniversary Event steering the rig with my left hand while firing off the digital camera with my right. I literally could not stop myself from taking pictures - even took a bunch on I-70 through Vail Pass going out/back...