With money.
You can either use the Cinemark app or you can get tickets at the box office (even days before the show).
They have a box office where you can buy tickets or a kiosk, which is where I usually get them.
If you don't want to go to the theatre early, you can use the website or the app to buy tickets. The app is really easy to use and if you want to you can have it remember your credit card info. There is an online fee though. Seems like it is $1 or $1.25 per ticket. I think they may still waive the fee if you use a Cinemark gift card, but i am not 100% sure on that.
Online, the app or at the theater.
On line is easiest, faster, and keeps you from standing in line. On Tuesday, it is the only way to go.
All of the above have the correct answers.
They also have kiosks at the theater
The box office is right through the front doors. They normally have people manning the ticket booth. There are also kiosks on either side to buy tickets. If you prefer to not go in until your movie starts you can purchase tickets on the 'cinemark' app or the 'flixster' app.
I like to use the app but you can also go to the tickets at the window when you arrive
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