A topic of concern when preparing a group for a Mission Trip

On a mission trip or in preparation for a mission trip, a discussion worth having is the idea of “when in Rome do as the Romans do” -- wherever the group is, they are the outsiders and should conform to the basic sensibilities of the local area. (One example: they expect exchange students in their schools to bathe daily, like they do, even if this is not the custom from where the exchange student came from. They should, in turn, adjust to the sensibilities of those they will be with.)