Since 1881, the definitive Napa Valley deli (oakvillegrocery.com) has supplied wine-worthy picnics – gooey local cheeses, artisan charcuterie, Dungeness crab-cake sandwiches – and now they serve made-to-order pizzas hot from the patio's wood-fired oven. Consult savvy staff to find a new favorite Napa wine, and they'll open it and hand you wineglasses to toast the good life on picnic benches. Great gourmet gifts, too.