I think this has been covered before, but since my Spanish is so poor, I've tried all of the websites (Renfe and Alsa) to purchase a ticket from MAD to Pamplona on August 10, 2016. I've had no luck at all. Is it possible to just buy ticket that day? Chances that it can be overbooked? I would...
This site is run by Ivar at in Santiago de Compostela.
This site participates in the Amazon Affiliate program, designed to provide a means for Ivar to earn fees by linking to Amazon