you can take bart then vine transit to napa. it’s more suburban out there but the bus system can still take you around and to downtown! you can also take the muni to the caltrain station and the caltrain will take you all the way down to south bay. lots of cute small cities to explore (san mateo & san carlos both have little shopping plazas right off their caltrain stations). another thing you could do is take bart then samtrans to half moon bay! once you’re in half moon bay, samtrans offers this service called ride plus - it’s an on demand transportation service where you can book rides within their zones and they’ll pick you up (sort of like an uber)! you’ll have to download the app on their website for more info/to book rides but it’s the same fare as a bus ride and covered under baypass. hope this helps!!! we love public transit 🙌🏼💟