Bay seniors who like food trucks but not eating their dinner sitting on a curb, would be well advised to investigate Off The Grid’s Presidio Picnics held every Sunday from 11 – 4 at the lawn by the Main Post. Stretch out on the greensward and soak in what sun there is, plus live music, games and a smallish farmer’s market. Free. In a very 2013 touch, servers will be circulating and taking cocktail orders. Until October 27.