Not really on topic but I don't mind taking a downvote for sharing my experience. I was staying in nearby Tinerhir. The choice was to spend £70 on a 4x4 or about 50 pence on a shared taxi. Guess which? I would worry about getting back to Tinerhir later.
This is how the shared taxi works in Morocco. The drivers call out their destination and leave when full. They take up to 6 passengers: 2 in the front and 4 in the back. My first trip was in the back on a long town-to-town journey. It was so cramped that we had to lay one shoulder on the neighbour, kipper fashion. Every so often, by mutual consent, all 4 would twist the other way so the opposite shoulders overlapped. There was a French woman in the front who had bought both places in the (single) front seat, and thereafter that is what I did.
To get back from Todra Gorge to Tinerhir, I winged it and started walking and tried to hitch a ride, looking out for a taxi or bus. After a while, a car with four off-duty soldiers picked me up. No problem.
BTW a fez is a hat, the Moroccan town is Fes.