One appetizer. One glass of wine. That’s the proven recipe for pre-show noshing in Austin. More food, more wine, and you’re likely to nod off during the first act, and you won’t revive until the fresh-air break at intermission. Austin is home to countless bars (no kidding, we lost count) and restaurants (think Wink) where a savory bite may be obtained — in a hurry, a factor given an 8 p.m. curtain. Meet your date at least an hour in advance, preferably at the bar itself, where service is quick and departure can be instantaneous. And, if you can, pick a ...