You go to theater, tell the ticket person what movie you want, what time, and if there is anything special (3d, or cine1) give them the pass they will tell you if there is a balance and it goes like any other way of getting a ticket from there
You can use that pass for any movie including Special Engagement. It's only good for one ticket.
I would imagine you trade it for a ticket of whatever movie you want. I have one myself but I have never found out how exactly to use it but I understand the general idea.
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