San Diego is very much a driving city. There is little public transit. There are many Ubers, Lyfts and cabs, but renting a car is the most convenient way to get around.
There will be dedicated parking at the venue.
Beach formal There will be grass and slightly uneven ground so think about your shoe choice.
There will be vegetarian and gluten free options at the wedding. Food will be served buffet-style so you can choose what you like!