This was last year when we went to Malaysia for a few days.
My husband did not realise that she’d said thank you in Korean when she’d handed our passports back. She saw he was Korean and so had used Korean and he just took his passport and walked away! Well it was about 4am.
It is funny when people don’t realise their native language is being spoken. My brother was asked directions by a Japanese student in Sydney one time. My brother speaks fluent Japanese and realised this guy was Japanese so gave detailed directions in Japanese. The guy made no acknowledge of my brother speaking his native language and went on his way. I wonder if it hit him later that a random Australian guy had spoken Japanese or if he was thinking, “Wow I can understand English really well!”
Sometimes I think I can understand Korean well but then I realise it’s because I’m just understanding all the loan words from English.