Outdoor Seating on the East Side
Also on Manor, Vivo has one of the most beautiful patios in Austin.
A little further east, El Chilito has a nice covered area.
Luis's Bar-B-Q ( MLK just west of Airport ) and Sam's (12th just east of Chicon) each have a few picnic tables.
Azul (1808 E. Ceaser Chavez), Blue Delilah (1115 E. 11th ) and Cafe Mundi (1704 E. 5th) have the sandwich thing covered.
Or just grab some take-out and hit the picnic tables near where Chicon dead-ends into Lady Bird Lake.