We are off to the hopefully sunny Algarve in 3 weeks. We are zipping across Biscay on the ferry to Santander. We want to spend a week or two driving down to the Algarve, I have stared at the map but have no idea which is the most interesting route to take, not the fastest. Any advice please? Also is it difficult to get onto the Aires in the Algarve as I understand there are a lot of motorhomes down there every winter?