We had an easy time getting tickets on line for a time frame that suited our NYC visit's schedule. We went around 5:30 and experienced no lines at all. I loved the interactive displays on the way to the elevator(s) -- that was unexpected to me, but a very cool way to learn about the site and its history, famous visitors, etc.. We were there on a hot, summer afternoon and appreciated the breeze up on the 86th floor. Great views, as expected, and we spent a pleasant time of roughly 30-40 minutes outside. This was a wonderful part of our NYC visit, and you should go, too!