Lots of food possibilities:

Tiburon: Guaymas (outdoor seating available, mexican), Servino's (Italian, also outdoor food), Jake's

Larkspur: Left Bank (Froggy), Marin Brewing Co. (Right across from the ferry so folks could ferry back to SF if they had a brew)

I'm liking the whole Tiburon loop to Larkspur and Brew pub then ferry back idea....