Western Sahara formally belonged to Spainish Sahara untill 1976 (?) and now has back to his Muslinmin country ideology. People show respect to women if they cover their hair, noce, mouse and ears. The way to gain more respect is even to cover your eyes.
For male traveler, don't wear shorts or avoid wearring short sleeves shirt.
Digital camera is a must for all of us not just to western sahara. Other that ca\mera, a cap, long sleeve shirt and sun tan lotion is strongly advice not to forget.