First of all, I arrived in NYC the day before our reservation - less than the 24 hours required for penalty free cancellation - with serious chronic back pain. While Catherine from the tour company did the best she could to offer me something - a one-time chance to rebook - we decided to try to take the tour for as long as my back would tolerate the walking.
However, some dummy (me) directed our taxi to the wrong church, forcing us to hoof at top speed (turtles whizzed past us as I groaned and moaned along) trying to cover the 5 blocks in 2-1/2 minutes.
Plus, it was bitter cold and windy, for which we were woefully unprepared.
Long story short - we gave up after a block of being trampled by stampeding turtles and went shopping. $200+ down the porcelain tube. But not their fault.
I gave 3 stars only because I have no idea how the actual tour was.