Of course, the term "in the Al Haouz province" can mean a lot. It may of course double for Afghanistan or any other country of the like. Marrakech is located there, the Atlas Mountains are also close, but why go to the Atlas when they're already in the Alps (which will quite clearly not double for anything else). But the main question is: Why aren't they going to Ouarzazate (which is just outside the Al Harouz province)? The Atlas Film Studios are located there, with facilities and skilled local crew at hand, and they've already been there to shoot TLD (where it double for.... Afghanistan - big surprise).
Now we have two options:
One - it's all a bit of local bragging. Craig and Mendes were in Marrakech and may have had it as a local base (and eventually keep it as such), but they're actually going to shoot in Ouarzazate. Marrakech is much more comfortable (and maybe safer, too) for Westerners, and is kind of an in-location, and it's not too far away. Local bus takes four hours, so it's o distance for a couple of Range Rovers or even a helicopter.
Two - they're really going to shoot in the Al Harouz province. So, what's so unique in that province? What is it that they can't find in or near Ouarzazate (which was good enough for Lawrence of Arabia, The Man Who Would Be King, TLD or The Mummy). The answer is simple: Marrakech itself.
Personally, I hope for Number Two. I've always hoped for a Bond movie to shoot in Marrakech. It's simply an incredible place, a real "thrilling city". Been there a few years ago. Those who've been on board back then may remember my Tangiers location report from that trip (note to self: gotta restore that article from the CBn archives). Perfect reason for another visit. All I need is an exact date. I've already checked flight plans and availability at my favorite hotel there...