from the homeini
if you forener you should obey the rules of the place
if not you purged religion and traditon that are essence of the living of
person who obey sharia
iask him if ineed to get the rules
hetoldme that 
islamis united us inthe arabic world
but the tribe laws (evenin iran ) is different
so you need both toknow islam
and obey the rules of the owner of the business and /or home

more than that iam permitted toask
where to go
what ineed to do
not to peurge the sharia tribal system and the lawof theowner of the place