Hi, I guess the one thing he needs to do is to take off his shoes before going inside, but I'm sure the people he's with would remind him of that? Also, in Islam, modesty in dressing applies to men as well as women so he needs to make sure that from his navel to his knee is covered. I can't think of anything he would say to offend, apart of course from obscenities (sp?), which I'm sure he wouldn't do! HTH [GRIN]