QOTW, San Diego style

Okay, so Bradley is in San Diego with Relia and James (co-workers), and the conference they are attending doesn't start until tomorrow. So they have all the rest of today to kill, and called me to look up stuff for them. Here's what I found:

Coronado (Island with beaches, naval marine base, etc)
Wildlife Animal Park (wicked awesome zoo-type thing)
Balboa Park (large Central Park-type place, with historical buildings, art and science museums, botanical gardens, and the San Diego Zoo)
Embarcadero Marina Park (shopping, restaurants, and entertainment)

What would you choose to do, for the afternoon/evening? Assume no children, and that everyone you are with is totally pumped to do whatever you want. And assume money isn't a worry.

(And you can't choose SeaWorld or LegoLand. Because they aren't on my list. So there.)
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I would choose the Wildlife Animal Park, I think. Up close and personal with rhinos, giraffes, and cheetahs? Awesome.