San Antonio has much to see (all sorts of convenient turistic, historic and cultural attractions plus TexMex, a cuisine of its own, merits debatable, but still enjoyable)), optimal Fall weather (though still between warmish and hotter'n Hell), requires minimal wardrobe, decent hotels in several price ranges (I like the Hotel Havana, sort of "Boutique-y"), and is but about 3.5 hours from College Station up IH35 a piece, then across "Old Texas" on SR21, the old King's Highway and modern "Barbecue Trail". You can plug in Austin easily as part of the trip to/fm CS for football which at Kyle Field is a grand experience, once you get by "all standing". You had better find tickets before you go!