The specific example given was a shabu-shabu restaurant where the menu had an all-you-can-eat option on the Japanese menu, but not on the english one. The Japanese one wasn’t given to the individual of Brazillian heritage despite speaking fluent Japanese. upon return, they had their Japanese friend enter first, get the appropriate menu, then all join him to have the option.
My comments here are second- (or third-)hand, and from a pair of individuals as reference. Law of small sample sizes and so on apply. I thank you for the first-hand accounts provided by yourself and others, and definitely believe they should be given significantly more weight by readers than my indirect accounts provided above.