Worth the money! Separate lines for Explorer Pass holders, are much shorter.
Chose this over the unlimited type of city pass since I knew we could only fit so much in during our 3 day stay in New York. Paid for 3 options having worked out our schedule and best value for money. Used for Top of the Rock Rockefeller Centre, Empire State Building and night time ferry. No fast track options, but queues in May not bad. Personally like to have paid for as much as possible before travelling, and without putting too much strain on time, family members know the plan! Bought city sightseeing tour bus tickets separately as got a better deal with added hop-on-hop-off ferry tickets included.
I was hesitant to buy this pass for our trip to NYC only because if it rained we wouldn't have been able to do the things we wanted to do and then may have wasted money buying the pass. Also, I feared the Statue of Liberty line, not knowing what to expect and not being able to make some sort of advanced reservations. Luckily for us, it didn't rain and the lines at Lady Liberty were light. So our experience was close to perfect. I bought the Explorer 4 pass and used it on Top of the Rock, Statue of Liberty, Central Park bike tour and the American Museum of Natural History. I think I would have saved more money though if I had bought the Explorer 3 pass and just paid for the Statue of Liberty. Originally I was thinking of doing a guided tour but we went with just the self guided tour that was only 18.00 per adult and 9.00 per child. OOPS! Do your math and check it twice.