Travel in a Muslim country is very different from Europe or North America, dress modestly and cover upaway from your resort hotel.
Make sure you take comfy footwear for daytime and it is best to avoid heels - flat sandals for the evenings and preferably closed in shoes for the day as the streets are often uneven and dusty. We really like Hotter shoes, as they're so comfortable but light and stylish too.
During the day it's hot, so our advice is to pack lightweight, loose fitting clothes in natural fabrics such as linen, silk and cotton that will keep you cool and are easy to wash and dry.
If you're planing a trip into the dunes, take along a scarf or sarong to tie around your face to keep out the blowing sand.