Is there any kind of behaviour that Japanese need to be careful about while they are in the United States?
Are there any actions Japanese need to be mindful of while they are in America?
この場合、次のような言い方ができますよ。
ーIs there any kind of behaviour that Japanese need to be careful about while they are in the United States?
「日本人がアメリカで気をつけた方が良い行為はありますか?」
behaviour that Japanese need to be careful about で「日本人が気をつけるべき行為」と言えます。
ーAre there any actions Japanese need to be mindful of while they are in America?
「日本人がアメリカで注意した方が良い行為はありますか?」
actions Japanese need to be mindful of で「日本人が注意すべき行為」と言えます。
ご参考まで!
While in the U.S., are there any behaviors in particular that Japanese people should pay attention to?
ご質問ありがとうございます。
「アメリカで日本人が気をつけるべき[行為](https://eikaiwa.dmm.com/uknow/questions/65821/)はありますか?」は英語で「While in the U.S., are there any behaviors in particular that Japanese people should pay attention to?」と言います。
そして、「日本人が文化の違いで失礼な行為があるか」はそのまま伝えたいなら、「The reason that I'm worried about behaviors is because there is a cultural difference between the U.S. and Japan. Therefore, I don't want to behave in a rude manner while in the U.S.」という風に言えます。
ご参考になれば幸いです。