Hi: A friend and her car will be meeting my son and I for a couple fo days in SF. I was going to buy transit passes for all of us, but the unlimited 1 day pass is $15. Also where we're staying in Marina, there's only 2 hour parking and so if we go somewhere, she'll have to park the car in a garage nearby.
Is it crazy to go to Chinatown from Marina mid-day in the summer? If it's not crazy, is there a parking lot where we can easily park?