[ornornor]

I’ve avoided flying like the plague for several years now.

But I don’t remember having trouble doing this in Europe or Canada.

It’s not publicly advertised because airports prefer you go to the overpriced airside concessions they can charge obscene rents for, and airport workers just know where it is; they don’t look it up.

Next time you fly, ask a janitor or other airport employee (the ones in the shops don’t always know and/or eat at the concessions because they have discounts) and see for yourself. It was typically ground staff, janitors, security guards, baggage throwers, public transit employees eating there.

[mcv]

But I guess this is outside the check-in area, isn't it? Beyond the whole check-in, passport check etc point, everything is pretty thoroughly locked in and regulated. The only place I could accidentally leave that area was in Casablanca. I doubt it'd work at Schiphol or Frankfurt.

[ornornor]

Yes you have to go back through security afterwards, the canteen isn’t airside.