Noises
Quicky: I read that it’s not done to blow your nose in public in Japan. OK, then I won’t. But slurping your noodles appears to be perfectly OK. I cannot decide which of both I prefer to not hear.
Fun fact: the moment I got to the airport in Ōsaka, there was a sign next to a water tap specifically asking people not to gurgle. OK. A minute later when using the rest room, I hear someone gurgling.
Right, so there actually appears to be a need for such a sign.