If you were visiting another culture and they expected you do to something that they viewed as an important part of their culture, but which you viewed as totally unacceptable in YOUR culture, what would you do?

The question about eating human flesh prompted this.

If it is a serious insult in a culture you’re visiting to not do something they expect of you, but in your culture what they want you to do would be viewed as hideous or immoral, what should the right course of action be?

Same goes for someone visiting your culture…who’s job is it to resolve this issue? The visitor or the host?