Live Oak Hillside is the must play. Flying Armadillo is cool but I don't know if it's worth the drive given just 1 day. Live Oak Lakeside isn't as good as Hillside but it's worth playing, especially if you are already there. After those two, it kind of just depends on where you want to go, how much you want to drive, and how long you want to play. Universal City and McClain are close by but neither are fabulous. McClain is currently in "reverse" layout so the regular course isn't available. Both of those are not well marked and somewhat confusing. You could drive to Flying Armadillo if you want. You won't be disappointed if you do. It's a cool place. The golf is pretty average though. Another option would be to go play Max Starcke in Seguin and/or Graytown southeast of San Antonio. Those are both really nice and pretty.