13 on our bus. Small shuttle van. A little cramped, especially for you s tall people, but smaller vehicles make for better parking opportunities. Parking, even for busses, can be at a premium, so we were fortunate not to have an issue at all.
Our driver/guide, Brian, was knowledgeable, thoughtful, and considerate of his passengers' needs. He was a very safe driver.
The tour was exactly what we expected and worth the money. Seeing the gorgeous sites while not having to concern ourselves with driving and parking made for an excellent outing.