Saved us a lot of time instead of Queing. Employees at the sites were familiar with it and kept calling out for CityPass holders to direct them to get quickly checked in.
I'm on the fence about this. It is good value if you do all the trips but if you aren't there for long you may feel tied to what is in this pass and miss other things. The bit about missing the long lines isnt really true. Yes, you don't need to queue for tickets (after the first time to collect your pass) but you do still need to wait in line with everyone to actually get in. We gave up on the Ellis island tour as we would have waited for hours. That said the ticket does get you in to the major attractions, at a cheaper price than doing it individually.
The museums inlcuded in price don't actually charge for entry - you give donation!