Do not miss:
The Algerian boarder between M'mamid and Goulimine, The Tizi'n Test (almond trees should be blooming) If you e-mail me I have some GPS points for a little detour in that area. (email@example.com)
The Khenifiss natural reserve, (Hope the oil tanker stranded in Tan Tan hasn't poisoned it by then) The beach stretch with its sand dunes between Inzgane and Corniche Aglou,
Essaouira, my favourite city in Morocco (I recommend the Hotel Villa Maroc in the medina if you can and want to afford it, it's a beauty)
The "Dar Timgrad" on the hill above Mirleft, Grafitti art, good food on preorder and "Aperitif" with the frenchman and his dog.
Actually in Morocco you can't really go wrong... It's pretty scenery everywhere and people are nice.