Great food, Austin vibe for Saturday lunch

Planning a lunch date this Saturday with my husband (with out the kids!!) and am seeking someplace with a really fun atmosphere with good drinks and food. We have tried a lot of high end places in town but looking for casual and fun for this meal, possibly with a patio though not essential. We'll be hanging around town lake that morning to give an idea for location (have car but don't want a long drive) and totally open on type of food. Thanks so much guys!