Thanks! Well, I waited another couple of days and the rate came down about $10. I used the code I mentioned above and ended up booking a roomette for my journey to Albuquerque. I'll rough it on the way home. This will be my first train trip. I've ridden the train twice for 2 hour journeys each time and loved every minute of both. I'm excited about my "long" trip and hope I can learn more before I venture out.
A belated welcome
CAO!
Take a look at
these tips from OTOL. They may give you some tips. And (to me) going coach on the Southwest Chief is not really roughing it. Being cheap

and traveling alone

, I usually go coach, and do not find it bad.