Try in all circumstances to avoid engaging in political conversations, religious conversations, or any criticizm of the saudi culture, even if asked to!
sometimes you maybe provoked to draw a comparison between nationals in two different areas in saudi, try to be diplomatic, and never insult or criticize anyone.
Donot be open about your religious beliefs if they contradict with nationals' beliefs, you will not achieve anything, and may get into a lot of trouble.
Never park infront of a national's home! this is extremely offensive to them, even if they park infront of your house, i have been put in two situations where i was mouthed at once, and in another had "No Parking" insrcibed on my car window using tooth paste.
Avoid at all times parking close to the pavement infront of any national's home, blocking an exit, a parking area, or a garage, even if you're in your car waiting for someone
On several occassions you maybe cut off in traffic, in cues, or have some national sitting in your seat on a domestic flight, donot argue! ask the person in charge to deal with it, if any are around, if none are around just simply accept it and move on.
Usually in flights, ladies are given priority in entering the boarding gates, in getting seats close to each other, do not sit in your seat directly if a lady is sitting there, ask the flight attendant to ask her first if it's ok? to avoid any embassements
Do not talk about liquor, drugs or sex openly, even to fellow nationals at work, even if provoked.
Do not ask about any nationa'l's wife's health, try to drop the wives out of the conversation, and definitely do not ask about her name or the daughters' names, unless told about the daughters who are presumably children.
Well I was been in Dammam for 1.5 yrs and i had hell lot of a ride of experiences.I seriously admit the fact -its an OPENPRISON.If you are a non -muslim and belongs to a country/culture where you are a big time party freak ,ladies man and bears a "i dont give a ***" kind of attitude then seriously dude you are very much in a wrong place.Liquor ,Sex,drugs well what shoud i Say are just LETHAL.Ready to be generosity at its best as you shouldn't be reacting to - if a kid throws up a pespi can at you ,a national who will just shoot you if you dare stare his wife,you found smoking anywhere during the time of Namaaz (very critical),a national bumps into your car and you shout at him to name a few.But all the same if you a true foodie then you own the place ,As you can gorge into a lot of non veggies like genuine arab cuisine ,turkish extravanganzas and indian delicacies in plenty.One thing i would never forget to mention is driving.Well against all the odds driving is something you would relish for sure as you have the Best throttle cars , world class roads,and yeah the purest form of petrol and of course the cheapest.You can buzz around the roads going the Half moon bay,Ras tanura ,Jubail city and if u still ain't content then till the kuwait border and lot many more.Fishing ,bar-b-que on the beaches are or can be the only outdoor activities or cricket/football if you hv got some indian counterparts.As the list of experiences goes on nevertheless If you have locked in these basics up in your mind ,You are good to go:).