People from different countries have various customs and behaviors, which can be scarce or adorable for them.
.... you can improve the presentation of this idea;
Customs and traditions differ from nation to nation and all of them possess unique values.However, when one travel or migrate to other country there are some debates about the behavioral priorities.
It is better you introduce the issue in its original form;
However, in today's globalized world where people frequently visiting other countries different to their origin, it is argued that such visitors should follow the local traditions and customs. this is the background of your issue.
Now conclude the introduction with a statement that expresses your opinion.