According to the wiki, that I had no idea existed until just now, the promotion starts tomorrow. That's January, 16th 2023. I'd guess Kum and Go or Walmart would work.

If that doesn't work I'd grab a time machine, head to 2011 and have one of your buddies pick some up for you while they grab doritos and game fuel for the modern warfare 3 double xp codes.

Never felt older.

Anyways, happy hunting!