I doubt many will actually go into Porto...
Most of us avoid any town/cities.
It's not just wine tasting, ideally it's finding somewhere we can stay, have wine and food, without having to drive anywhere
And no, we will not be going anywhere near Braga or Guimaraes, etc. - but will checkout your suggestions.
We have been looking at entering Portugal via the N103, and down the R311, and N210, N101...
Monte Farinha / Sra. da Graca - Mondim de Basto and N304 to Vila Real is likely to be a blatt on the day-off
Le Presidente