So San Antonio & Houston are like, what, 2-3 hours apart? My Texas experience pertains only to Houston & Dallas, so i don't know what San Antonio is like, but can it be that much different? (no offense intended, honest question).
I would not let my wife book a room in K.C. (2.5-3 hrs away) to shop and watch movies. Maybe, maybe drive down and back to shop, but even that is really pushing it. If we a going on a vacation it will be to Colorado, Seattle, Portland, Tampa Bay, etc. Somewhere that the layout is completely different. Go to Colorado Springs or something, I heard Colorado is hurting for tourist this year with the economy and all...