Either way is ok
I always purchase tickets before hand to reserve the seats i want. Stubb Hub members do not have to pay ticket fees. I recommend waiting to purchase food at the theater. This AMC is split on two sides of the mall. One side does not offer food or drinks. You have to walk to the other side for that and then back. Can be a long wait.
Either option. If you want to reserve your tickets and seats ahead, that's always smart, but they charge a convenience fee for that.
You can order both when you get there. If the movie is popular, I would recommend checking the seating available online. You can do that by acting like you're going to buy a ticket and then backing out of it after seeing the seating chart.
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