You have to be careful at all times that you don`t tread on a sensitive cultural toe. Women should NEVER go out without a headcovering -- and they should wear an abaya as well. This is mandatory in Riyadh; the coastal towns are more liberal. Do NOT wear crosses, do not talk about religion, do not criticize Islam. Don`t even THINK about wearing shorts in public unless you`re at the beach. And if you drive, make sure you keep one eye on the mirror at all times. The driving is horrific because it`s the only time a Saudi can feel he`s free. If you find yourself driving in Saudi, watch out! Drivers make turns in any direction from any lane with few signals. There is no apparent lane discipline, traffic lights mean little, and parking is a nightmare.