I plan a trip for two people from Porto to Switzerland, stopping in Lisbon, Faro, Seville, Madrid and Narbonne. The trip will be in August.
I noticed that seat reservations for Portuguese trains are only possible at Portuguese stations. Since my planning does not allow me to arrive at the first train station (Porto) more than a few hours in advance, I would like to know how full the trains are in Portugal in August. I saw that on the day I want to take the train in Porto, there are a approximately a train every hour. I would like to know if I need to prepare a backup plan in the case that all trains are full. Anyone could give me a piece of information?
Best regards.