Where did you go in Saigon where you got such a high fee (or a fee in general for not having coffee)? I’m genuinely curious as in my experience, even at really touristy specialty coffee places the coffee based drinks were no more than 80k, and never had a fee for someone who didn’t drink something with coffee, so a fee so high sounds strange. Admittedly all the cafes I went to had some kind of juice, so it wouldn’t have been a problem in any case.