Cyndilu2

We are leaving in 2 days for Madrid before heading to Porto for Viking Helgrim. I have read that all of the shops on the Douro are built and owned by the same company in co-ownership with the cruise line who sponsors the trips. it sounds as though all are laid out and fitted to the specifications of the cruise sponsor, in our case Viking. I have a question about electrical outlets. What should we expect in terms of type and number of outlets per stateroom?