Maybe they could see OPs entire "14 years through CM Airport no problem before " history.
I think the back-to-back visa-exempt route will be limited soon. It is in their interest to nail it further.
You're taking this too far. I bought some roofing tiles today and the people were exceptionally kind to me. The owner of the shop even asked for number and invited me for coffee. I think in some areas the people are so fed with tourists they turn bitter, and who can blame them with all the nonsense they have to put up with.
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