It was so easy to use. I printed our vouchers, they were scanned on entry to the places we wished to explore. It was a great saving on the the door entry prices and so convenient that you could purchase the New York City Explorer Pass before you traveled.
Good for not having to buy tickets when there but have to be careful with what items are actually included within the pass - for example, at One World Trade Centre the pass only gets you access to the tribute memorial centre itself is only 10 and not the observation deck or museum on site.
The hop on bus tour isn't great, if you want to make the most of your day then don't leave it to the last few buses in the evening, we waited an hour and a half from 16:45 and then only 3 buses turned up meant to be every 15/20 minutes. Buses were also very full and then took an hour and 45 mins to get back. Not a great way to end the day. This service is better in the mornings as the tour guides are very good and a nice way to see the city.
It's so convenient and easy to use. It's also significantly less expensive than purchasing tickets for the various activities separately. I figured out that in our five days in NYC we ended up paying about half the face value of the tickets at the ticket counter. Those things can add up. Use the savings to buy a nice dinner somewhere.