Gosh cliveandann that was a great list.
I have just come back from Morocco but I was not in my van, I like to back pack and for me it is cheaper.
Please be aware those of you who have posted stops from previous years they have now really clamped down on wild camping and prefer you to stay in the allocated camps - especially after the killing of the two young women.
I did see a few vans wilding at Mirleft but nothing like there used to be. The camp sites are reasonable about 8-10 euros ( 80 - 100 dirhams) but the few I visited in Agadir, Tisnit and Sidi Ifni were pretty full - of French and Germans. I saw very few Brits.
I enjoy Morocco enormously and travel on my own. I find the people very friendly ( or curious) and would encourage you to engage with them too, especially away from very touristic areas. Be aware that as you travel away from tourist area they may not even speak French, only Arabic and if you go far south then Berber. Practice your charades but most of all I hope you really enjoy it.