If you buy normal tickets, seats reservations are included. If you use a Eurail pass, you will need to book seat reservations (prices here), since these are mandatory for these 3 trains.
If you buy normal tickets, seats reservations are included. If you use a Eurail pass, you will need to book seat reservations (prices here), since these are mandatory for these 3 trains.
The Es sector, B to M, also now has cheaper low-cost trains, that would not take any passes-only sold tickets. These are named AVLO=spanish or Oui-GO (FRench TGV). The normal trains are superfast AVE from RENFE.