Departure Point: In front of Starbucks on the corner of State Street and Pearl Street.
You can cancel up to 24 hours in advance of the experience for a full refund.
To make the most of it you really need to go first thing in the morning as the queues to get onto the boat were long other than that it all went very well.
Worth the money though, particularly if you feel you need help navigating how to get out to the island.
Tell your guide if you have a walking disability, so they came make adjustments with the timing of the tour.