Cotijas - http://www.cotijas.com/ - great burrito spot - note: you must try a "real burrito" while in San Diego. Try the California or Hashbrown Burritos here.
Phil's BBQ - http://www.philsbbq.net/ - You'll be eating this at the wedding, but it could definitely be done twice in one weekend.
Bali Hai - http://www.balihairestaurant.com/ - Chelsea used to work here - great views of San Diego Skyline, make reservations and ask for a window table