Only an hour drive from Napa, San Fransisco is perfect for a day trip or to spend the first night of your trip at, especially since you will most likely fly in to SFA. You can enjoy viewing the Golden Gate bridge or shopping and dining at Fishermans Wharf. San Fransisco also offers a diverse nightlife (if that is your scene!) and amazing seafood that Logan and Summer love! Dress for chillier weather! For more details of getting from American Canyon to San Fransisco via Ferry, visit the linked website.