okay, here we go.... maybe not all info is applicable for you, but it is also a memory-dump for me ;-)

Time of travel:
It is a bit chilly now, and in mid winter it can be freezing even in Morocco.
France is crowded with tourists in July & August (mainly Dutch ;-)) and I always avoid this. Campings ware a lot cheaper in low season too!

France: I don't really like the west coast that much; think Bordeaux is a bit boring... but that may just be me. The east is very beautiful, also the Alps are really nice! I love the central massive, really nice.
- Peage is expensive, north to south is about 50 euro's per bike. You can easily avoid the toll roads and have an amzing ride (but a bit slower) on 'Route National', or RN. Nice roads, takes you through all nice little french villages.
- Cheapest gasoline is at big supermarkets, or hypermarkets. Huge difference with gasstations near the roads.
- Cheap camping: ask/look for 'camping municipal', that are non-profit goverment campings. Sometimes boring, sometimes surprisingly beautiful. Always cheap.
- On the south, where the Rhone goes into the Meditteranian, you can camp for free on the beaches.
- If you are in a hurry, from Germany (Dusseldorf) you can take a car/bike train to Narbonne, but that is expensive. From there, you can drive to Barcelona, and hop on a ferry to Marocco.
To give you an idea, we drove a few years ago with the car and bikes on the trailer from Luxembourg to Algeciras in 26 hours. Only peage, slow car though ;-)

Spain:
- Gas is cheaper here than in France
- Fastest route to the south is via the coast; peage. Cost is about 50 euro's per bike too.

Portugal: never been there.

Morocco:
- Ferry from Algeciras to Morocco is easy, there are plenty available and we payed about 110 euro's , two way for bike+rider.
- Border is easy, Morocco wants to stimulate tourism. European insurance for the bike also covers Morocco.
- The north is dodgy; just drive to Chefchouen (about 200 km's south) on a clear day, as you come from the ferry e.g. in Ceuta. Don't stop for people, they just want to sell you drugs. We really didn't like this part... Chefchouen is nice, from there on we loved the country and had great fun.
- Campings are nice, although you'll find them sometimes super basic. (put your tent on the parking lot... ;-))
- Moroccans are supercool people, hope you speak some French! They all do.
- Roads are good, can by gas everywhere. Easy on a big wing ;-)
- Don't forget to camp in Ouzoud at N 32.00.351 W 006.43.177. Say Hi to Paul and Renate for me; great people. Can also tell you everything you want to know about Morocco, so you might camp/slep there on your way down?

On my website (Far Away From Flakkee) you can go to the tab ' vakanties 'and check out our route and pictures. Any questions, feel free to ask.