On the first train, Millbrae to Embarcadero BART station and catching the F-Muni to pier 33 to go to Alcatraz. How do we pay for tickets on the trains? Is there vending machines, is it only cash or credit? Also, going to Marin Headlands catching the 76-Muni. I don't know if we need exact change in coins or bills or is there an easier way for paying? We are just going to be there for 1 day, next Sunday.