Does the possibility exist to chose between preparing my own food (in the house for volunteers) and eating with a family in SF?

The volunteer program includes all meals (with a family in San Francisco) however, as the house for volunteers has a completely equipped kitchen, each volunteer can also (at your own cost) bring food and prepare it in San Francisco. There are no supermarkets in San Francisco, only small stores; for this reason it is recommended that you bring food to cook from Quito.