One of the most important lessons I learned when I first traveled abroad was to pay close attention to local customs and rules of conduct. Learning to say your pleases and thank yous is important, of course, but where and when to say them is also an important thing to know.
Did you know that in many countries that it is considered rude to pick up and inspect produce at the stand? Yep. It’s because the farmer or purveyor is considered to be the expert in the situation; that and they don’t want every person who stops by touching their goods.