You know us - dress comfortably! The weather in San Diego is usually still quite warm in late September, so be prepared for a warm and sunny ceremony in the afternoon. It will cool down in the evening, so you may want a light jacket.
Parking in this area is notoriously difficult and the parking police are always around to write tickets - we recommend using rideshares as much as possible. If you do decide to drive, the venue is located 1 block from the DMV which has 150 parking stalls that are seldomly used by the neighborhood. It's free and open to the public on Saturdays and Sundays from 7am-3am.