Concur on the reciprocity, I’ve donned a kippa at the wailing wall and doffed my shoes in numerous places, heck if I don’t at home, my wife being Japanese, I have to make a hasty retreat.
That being said some cultures feel you should make others feel at home by acting in the manner of their homeland, while others feel the visitor should adapt. I’ve seen Americans act both ways because we have such varied family traditions.
The food issue is always the hardest for me- I know I’ve inadvertantly offended multiple cultures by forgetting vegetarian, no beef, no pork, no what have you... I just scratch my head and try to
Ale do after an apology... No ones perfect, but some feel they don’t need to reciprocate and then I let them know that when jaws in such and such I was expected to adhere and usually when they realize I’m not a roof who hasn’t even tried they either express outrage to cover their mistake (rare) or beg forgiveness for their assumption.
In china you don’t clean your plate or it’s an insult, in Japan you do, and in moms house you’d be lucky to keep your siblings from your own plate to scarf it down.
Make not ale - my subconscious telling me something