Day 1: daytime: seaworld + beach walk (sunset: Mission Bay) Dinner: Italian Restaurant (Cardiff by the sea)
Day 2: daytime: Balboa Park (various museums)
Dinner: multiful choices at Downtown (French, Thai, Japanese, Afganistan, etc. )
Day 3: daytime: La Jolla Beach (sealions, shopping experience) + Del Mar Beach (sunset)
Dinner: Charter's House (one of the best seafood restaurants in SD) or Chinese food (near 99 Ranch Market)
SD is a city that can satisfy various needs of travellers. It has recently ranked as the best city for travellers. Driving in SD is the most enjoyable experience.