Is it a fair guess that in November I would not need to reserve way out but could wait to see what the weather looks like during the 3 days we have allocated to Porto?
Then, when we get ready to book, does anyone have knowledge of Cruzeiros Douro? They do OK on Tripadvisor reviews. Looks like they may encompass companies mentioned in Rick's Portugal like Rota do Douro. But I don't see any advantage in booking direct if Cruzeiros Douro is ferreting out all the options.