I booked 5 activities with the NY Klook Pass. I received the QR codes for all 5 activities immediately after booking (Top of the Rock, ESB, Summit, The Edge, and Circle Line cruise). All the QR codes were easily scanned on site without needing to exchange them for a ticket. We were even able to do some activities a little earlier than the reserved time. The pass saved us the cost of one activity for the 4 of us, and it deserves to be known, especially since it's the only one that offers admission to the Summit! We will definitely use the pass again for another destination 🙂