A sign in a local mall showing the food court, mosques for men and women, and their respective bathrooms. Also, in most women's bathrooms are changing areas. Clothes stores are not allowed to have changing rooms for women to undress in. If you want to try something on, you must buy it, take it to the changing area in the bathroom, and try it on there. All clothing stores have return policies that make this manageable, if inconvenient.
Muslims are required to do 5 rote prayers a day where they must face toward Mecca and follow a process of various postures; these are called salah. However, you can do du'a any time of day. These are, to the best of my understanding, requests for favor or protection. There are some standard set du'a. Some of the times you might perform these du'a are: before sex, when it rains, when wearing new clothing, when suffering from illness, and dozens of others. Another one is when you enter or leave the toilet. This particular du'a is posted at the entrance to a ladies' bathroom in the university where I work.
Driving from Jeddah to Taif, the quickest route is to go through Mecca. However, if you're not a Muslim, you must take the "Privat Road" that bypasses the city. Contrary to what is widely understood, non-Muslims ARE allowed to go to Mecca if they're there for business and have permission and minders. They just aren't allowed to go to the holy areas. I have a number of non-Muslim acquaintances who have been to the city through their employers. I, however, have never been and doubt I ever will.
My friend and I near Tabuk. The scenery was really quite lovely. Matt Damon might have been lost out there somewhere.
As we were walking, a jeep of young Saudi Men drove past shouting "Welcome to Saudi Arabia! You are welcome."