Also the ride office is a good stop for buying the tickets if you don't get the times you want online. They're located on 44th and 8th Avenue
I would definitely book online. When you go to the website, you will have a choice of times to book.
I believe the only way to book these tickets is to get to the office on the day you want to do the attraction. All sessions sell out fast so you don't really know what time it will be until you have booked it
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