I’m sure because the first time I’d been there they said “welcome in” and showed my wife and I how to use the vending machine as it was a little non-standard even for Japanese people, then referenced that when we came back the 1.5 years later when we gave our order tickets over.

I DID wear a green backpack and red hoodie combo during our Japan trips, so it’s likely tall white guy + red hoodie + green backpack was enough to remember us, but it’s still impressive to me