It was easy to scan the QR ticket from Viator at the General Admission entry point. However, the description is FALSE. It DOES NOT include Mission Control. You would need to pay extra and book that tour in advance. All Mission Control slots are full days in advance (weekends/summer time). Aside from that, the visit was great. Lots of things to see that can take an entire day. Align your Tram times outside of other viewing options to assure you have time to see the short film, panels from Astronauts, etc. I did the Tram right when it opened to avoid the heat outside and busier crowd FYI, the elevator to view the plane and shuttle is out of order. You will have to go up four flights of stairs. It is listed on NASA webpage. So, check to see if it is up and running before purchasing your ticket if you need the elevator.