They struggled with scheduling.
We caught the bus, after informing them we were also doing the Alcatraz tour, and were booked to catch the boat at a certain time. Our guide said they could do it with plenty of time, we planned to ride the bus for the 16 stops until the ferry, based on that information, we missed the ferry by a fair margin and had to be on standby for the next ferry, only just managing to get on board. It put a damper on the whole experience. Also the tour guide was very self absorbed, and not that informative of what makes San Francisco unique. It was also VERY cold and windy on top, which limited the enjoyment.
We also did the night tour and that was worse @ The guide was BORING, honestly the taped narrative was better, and it was painfully freezing on top, seriously it would cost NOTHING to transfer heat from the engine to a heater unit on the top deck, just to ease the effect of the cold.
On other days, with used public transport, and uber nad had a much better experience for less money.
Not recommended.