We will be traveling in Spain later this month and using train transportation between cities. This is our first trip to Europe and we are wondering how soon before departure time should we plan to arrive at the station? Is there a security process we go through similar to TSA in the U.S.? Will baggage be screened; liquids in gallon bag, etc? If so, about how long does all that take? I have already purchased our tickets so we won't need to stand in line to buy them.
Thank you for your advice!