An RV would be sweet. The last two Fiesta Bowls I've driven from Wichita. In 1997 I was in my parents Tahoe with just me and the immediately family and it wasn't bad at all. It's a long drive and there is literally only one city between Wichita and Phoenix (Albuquerque), but we made it. Stayed overnight in Tucumcari. On the way back we went up to the Grand Canyon and came back across the Rockies in Colorado. Game was awesome, trip was awesome.
In 2003, I was with a mix of immediate and extended family. We had a minivan with 7 people stuffed into it. I was stuck in the backseat with my cousins and their chewing tobacco. Overnighted in Tucumcari again. Was awful. Game was awful. Worst trip ever.
But anyway like I said an RV would be sweet and way more tolerable than just cruising down in a car. You get room to stretch, move around, somewhere to pee, a TV, etc.