First Winter Trip to New Mexico, How to prepare?

Just an update on the spring break trip to NM, everything went well. It didn't really get below 25 degrees until the last night then it dipped down to 14. But all we had to do was fill the tanks unhook the water and hook back up when needed. Heater kept it pretty toasty inside.

Drove straight through 13 hours back home almost 800 miles, Truck did fine and we had a good time thanks for everyones input we will be planning another trip for next year.

Mike