Slurping noodles in Tokyo really does show you get it. When I tried it at a small ramen shop, the staff seemed pleased. It made the meal more fun and felt like I was part of the scene. Have you found other little things like that make a difference when traveling?
Here's the thing though, that kind of performance always feels a bit off to me. Watching tourists try to act local just for staff approval misses the point. Real connection doesn't come from nailing a slurp, it comes from being a decent, respectful guest. Those little acts can turn into a weird checklist rather than actual respect for a place. I've seen people get so focused on doing the "right" thing that they stop being present. Sometimes just being quiet and observant teaches you more than any act you put on.