Hate to tell you, this ain't over yet... Next, the 'sips will start a petition claiming that ESPN College Gameday should be there. Because... They're.... Texas.... Haha..
11 AM kick is all the more reason for you all to make the trip this way. Easy game at 11 AM (hot though), leaving the afternoon to go check out dining establishments and then maybe watch more college football on the Riverwalk in San Antonio or an evening at Gruene Hall. I've never done it during college football season, but perhaps the Grist Mill restaurant next to Gruene will be showing college football, or maybe there's a sports bar along the drag in Gruene (google and contact them to be sure), if you're really wanting to make a day of watching college football.
It should be hot enough go toobing down the Comal or Guadalupe Rivers near New Braunfels. If you fly in early Friday, you could stay in New Braunfels and do that Friday. Or, if you're looking to stay in San Antonio near the River Walk, you could go straight to the river to toob Friday ending the day in San Antonio. Then drive over to Austin for the game and back.
Lots of possibilities to do more around Austin / Gruene-New Braunfels / San Antonio with an 11 AM kick.