I'm treating my teenage niece and her BFF for a day of shopping and lunch in San Francisco soon. Trouble is, I'm out of touch with what's new/fun downtown. I'm hoping someone could toss a few dining ideas my way. I'm taking these HSM fans (High School Musical to the uninitiated) to SF to escape suburban mall food. Nothing too $$ or palate-challenging, please. (For context, I think sushi might be pushing it for these girls.) Thanks!!