My husband can't wait to drive the Amalfi Coast road when we're there in early December - he's a fantastic and safe driver, so I have no misgivings at all! I've surmised that it's great to go from west to east, in the afternoon, as we'd be closest to the shore and have the sun at our back. Is there any advantage to planning a round-trip (i.e. start in Salerno in the morning, sun at our back, and then return in the afternoon), or is going one way sufficient (for feeling like we've really experienced it)? We'll be coming from and returning to Napoli. In addition, any thoughts about what businesses may still be open in December along the coast? Thanks!
No personal experience, but have read repeatedly that at least one restaurant will be open in even the smaller villages.
I would definitely want to avoid driving into the sun, so I don't think going one direction will shortchange you. I'd check to see if Aquapazza in Cetara will be open.
We visited Amalfi coast from Salerno last February. It was quite quiet and some churches we had wanted to visit were closed as well as some restaurants. We did notice that there seemed to be at least one bar/restaurant open in each city. It was sunny and fairly warm when we visited. We had a nice day.
I'm not sure I'd want to drive Amalfi coast, but we've noticed that in incredibly scenic places it is nice to drive the road in both directions. You can catch more things, and the driver has more of an opportunity to see something that might have been missed going the other direction. That said, Amalfi is about the last place I'd want to drive with the sun in my face.