Ken,
I'm biased, AGC is head and shoulders above anyone around, but not really an option for you anyways. The courses at Barton Creek are all decent, but they'll be packed with SXSW going on, not sure though. If you get an afternoon take the time to head outta town for Burnet and hit Delaware Springs, great little course. Roy Kiser is a decent little track as well, haven't been there in a long time though. As for food, take time to hit Huts for a burger and there a tons of good BBQ places, County Line and Salt Lick are my favs, and out of the way place for Tex Mex is Rosie's (My Fav) best tamales around. Have fun at SXSW, I know I will
Kyle