My wife's ridden a bunch, but I had only been on a horse once, and that was well over 20 years ago. I had Beavis and she had Guinness, and we were at the end of the line of nearly a dozen other riders.
The tour tromped us around the little sandy trails I wouldn't be caught dead biking on or walking on either. But on a horse it was pretty kewl. We gotta see the really neat rock formations and saguaro cactus with out all the effort. We did see a roadrunner, but other than that no other wildlife. No galloping, just a bunch of dust.
Here's a short vid of the ride: