You can easily spend more than a week in Morocco and not even scratch the surface!
Recommendations for places to visit include FES - sometimes written as Fez , MARRAKESH, MEKNES and the ruins of Volubilis, Ouzazarte, Taroudant and Agadir. You might find it hard to drive between these - police checkpoints and discreet baksheesh are not unknown! - but there are also many local companies often offering short tours. A good week long tour is that of the Imperial Towns of Northern Morocco, which cover Fes, Meknes, Marrakesh, Rabat, Casablanca and Beni Mellal.