I have an AMC Stubs account so I haven't used the self service kiosk in a while. So I'm not too sure if there's a way to do it on there. However prior to my membership, I just walked up to the teller and immediately informed them that I am using a Black Ticket. For example, "I'd like to purchase a ticket for ___ with a black ticket."
Go to the box office. They should be able to apply the value of the pass to your movie. You MAY have to pay the difference between a regular and 3D film....but it is a good discount
Unfortunately I recommend that you use the self service to buy tickets or go online to buy tickets.
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