I bought an Interrail pass for Spain.
From what I understand, some train tickets are included in the pass, while others require an additional purchase.
How do I reserve seats? Do I need to go to the station the day before, for example? Or should I buy tickets on the Spanish railway company’s website or app?
Do all trips require a supplement? Or are there some trips where seat reservations aren’t necessary?
Thanks for all your advice—I’m a little bit confused.
