Strange, I posted a reply this morning - but now it's gone.
Anyway - I think that I mentioned I had looked into quick weekend getaways to Austin or San Antonio, but it still works out to be far cheaper to drive! Yup, even taking our least fuel efficient vehicle (Jeep Wrangler, 19 mpg) it's still less than the $52 per person round trip from CBR to SAS that I have found online.
I have been seriously considering joining the Veterans Advantage plan to save 15% on Amtrak bookings - and get added AGR points. If we like our upcoming "land cruise" well enough, I may be forced to do that for our next booking. I would easily save enough on a RT vacation boarding at CBR on the TE to CHI, and then the EB west to spend a couple of days at Glacier National Park, or just ride to the end and spend a day in Seattle or Portland. The 15% saved would cover the 5 year plan! And, I guess that I would also be able to save some scratch at the hotel we would have to book in CHI and maybe in Seattle or Portland.
I guess that I could also price some quickie overnighters from CBR to DAL. I know that there are some inexpensive, yet decent (enough) hotels within walking distance of the station there. I've been meaning to just go to FTW and take a round trip jaunt on the TRE just for giggles. I guess that I could do that. CBR to DAl and then back to FTW (on TRE) for an overnight, and then FTW to CBR the next day. Hmm. Might price that one next.