jerzycruiser - Fear Not! The Manhattan Cruise Passenger Terminal has all the piers in a straight line at the street address you were given. The car service sounds as if they are unfamiliar with the layout of the terminal. The total length of the terminals is not more than 1500 feet. There are seldom more than 2 ships in the terminal at any one time and they are readily visible from the street! The pier number is of little consequence because the distance between piers is not great! The car service you have been in touch with this should be aware of that!!
All you need to tell them is that it is the pier next to the U.S.S. Intrepid Museum!