AMA Waterways and the Duro River

Knowing where the boats stops would have been helpful. Other than the bus trip to Salamanca, the stops are in Portugal and this question would probably get more responses on that forum.

In addition to any replies you get here, be sure to go to Cruise Critic. It has a lot of information, but can be hard to navigate.

Here is their River Cruises forum: https://boards.cruisecritic.com/forum/115-river-cruising/

Here is their River Cruise Ports Forum: https://boards.cruisecritic.com/forum/340-river-cruise-ports/

Spain Ports Forum: https://boards.cruisecritic.com/forum/465-spain-ports/

and Other Mediterranean Ports Forum (for Portugal): https://boards.cruisecritic.com/forum/149-other-mediterranean-ports/

And here are their river cruise Roll Calls, where you can "meet" others on your sailing, arrange shore excursions with them, etc.: https://boards.cruisecritic.com/forum/546-all-other-river-cruise-roll-calls/