Do you know of any materials (vocabulary lists/grammar/videos/Anki decks/etc.) related to the service industries in Japan that you could recommend? I need to better understand the kind of Japanese used by shop clerks, officials, delivery men, waiters etc.
There is the video series „Nihonjin no shiranai Nihongo“. I‘ve only watched a few episodes, but I think in ep. 2 they are treating the language restaurant waiters use.
Looks like a cool show!