The chain will fill up any vessel one desires with popcorn for the low cost of $5, but Atlanta-area moviegoers looking to partake in the deal must face a tradeoff.

Cinemark Theatres is celebrating National Popcorn Day by offering to fill any container full of popcorn for $5.

The Cinemark movie chain plans to serve up a massive amount of buttery goodness during National Popcorn Day in January.

While popcorn lovers can load up on the buttery treat for the one-day event, container sizes are limited to 400 ounces — about 3 gallons or 50 cups. A Cinemark Theater is shown in this undated ...

You'll truly have that irreplaceable movie theater taste ... which produce fluffier popcorn than white corn. Unless you're using an air-popping machine, you'll need some fat to pop your corn ...