Hello Ft. Worth from an expat Texan living in Las Vegas after being stationed here in 1987. We've made the trip to and from more times than I can remember. Having relatives ranging from Dallas to Crockett and then on down to a couple of places in the Houston area. We've used most if not all the major routes to and from, including using I-10 from Houston back to Vegas. For straight to Vegas from the Dallas/Ft Worth area, I would recommend Hwy 287 to Amarillo, turn left on I 40 and turn right on US 93 at Kingman AZ. The route through OK City to Amarillo only takes about 3/4 to an hour longer as there is less slow downs incurred at the various towns along 287. I only do 5 to 6 hrs and/or a max of 300 miles per day so my layovers will be far different than most RVers. Try to avoid a layover at Santa Rosa, NM. The so called "best" park is at best a dump. HOA at Holbrook is a favorite of ours, very nice couple run it. Also don't fill up at the station on the far west side of town, they were .50 cents higher than those in town. Next trip I plan on doing Meteor Crater just for grins.