A good way to answer this question is:
To a certain extent I agree that... However, I also think that...
By saying that you agree to a certain extent (not completely), you can now talk about both sides of the argument.
People visiting other countries should adapt to the customs and behaviours expected there. They should not expect the host country to welcome different customs and behaviours. To what extent do you agree or disagree?
To a certain extent I agree that visitors to other countries should respect the culture of the host country. However, I also think that host countries should accept visitors' cultural differences.
After this introduction, you can write one paragraph about each view.