Hello,
I would like to travel to Portugal with the Interrail Global Pass in the next few days. Now I have read that in Portugal you cannot reserve a seat online, but only directly at the train station. Hence my question: How early do I have to reserve the seats? Is it enough if I reserve the seats a few minutes before departure? Of course, I don't want to go to the train station hours earlier. I am aware that I risk that there are no more places available. I'm more concerned with the technical aspect.
Help is very much appreciated.
Best wishes
Cheers, 
