..... the response to your post has been slow so far, probably because of lack of information.
How long will you be in Morocco for, apart from Marrakech, are you visiting other places.?
On excursions, you mention Camel Safaris/Quad-bikes and 4X4's. The most popular Camel-treks are done far south of Marrakech on Erg Chebbi from the desert village Merzouga mostly, a 12+ hour bus trip away, where all these activities take place. While in Marrakech, the Palmeraie beyond Geliz (New Town) camels are available, and an hour away on the No.33 ALSA City-bus to Agafay a Hamada stony desert camels are keep for short trips.
http://alsa.ma/fr/marrakech/itineraire-per-urbain
Just be mindful Marrakech is the biggest tourist draw on the Continent currently, restaurants and hotels have dumbed-down and compromised over time, the best place for authentic food is as always the homes of locals if they have a talented cook in the house.
Lonelyplanet have produced a revised City Guide for Marrakech which I recommend, a lot of stuff you you won't get here on the TT, it could save you money too, most likely you won't need to hire a guide.
