Is a 2-night desert trip worth it compared to just 1 night?

I'll be blunt, because I send people to the Sahara for a living: the classic '1-night desert tour' from Marrakech is mostly bus. You drive roughly nine to ten hours over the High Atlas to reach Merzouga, ride a camel into camp at sunset, sleep, ride out at sunrise, then drive nine to ten hours back. It's doable, it's beautiful in flashes, but you spend far more time in a vehicle than in the dunes, and people arrive home wrecked. For many travellers that's still worth it — they wanted to stand on a dune at sunrise and they got it.

The second night is what I quietly wish everyone could add. It breaks the back-to-back driving, so you actually get a whole day in and around Erg Chebbi: more time on the big dunes, a slower sunrise, maybe a 4x4 run to a nomad family or the Khamlia Gnawa musicians, a proper unhurried camp dinner under a sky with no light pollution. You sleep, you wake, and you're still there — that's the shift. The desert reveals itself in the quiet hours, and one night rarely gives you those.

Cost and logistics are the honest trade-off. A second night adds another night's camp fee, meals and a guide's time, and it adds a day to your overall itinerary — which, on a tight one-week Morocco trip, you may not have. If your whole holiday is seven days and you also want Fes, Marrakech and the coast, a single desert night may be the realistic call. If you have ten days or more, adding the night is, in my experience, the single best upgrade you can make to the trip.

My middle-ground advice: if you can't do two nights, at least don't do the round-trip-from-Marrakech-in-three-days version if you can help it. Routing one-way (Marrakech in, Fes out, or vice versa) means you're not repeating the same long drive, which softens the fatigue enormously. But if I'm choosing purely on richness of experience, two nights wins clearly — it's the difference between visiting the Sahara and actually spending time there.