In reply to Captain_Redbeard:
I did Jebel Toubkal a few years ago, in May, without a guide. We stayed a night in Imlil, a night in the french refuge, then up to the top and back to Imlil for the night. No-one objected or even commented on the fact we had no guide.
At the time the snowline was about the level of the refuge. We took walking axes and crampons. Most of the guided groups only had crampons. Quality looked very variable, and at the top we met a french chap who seemed to have lost his guide and broken his crampons (we made a temporary repair for him).
As we had axes, we took our crampons off and glissaded down to the hut. In retrospect this was a mistake, as although it was great for us, we saw a few other folks trying to copy us. With no axe, that's pretty dangerous. I wouldn't do it again.