I have been reading articles on Seat 61, but still feel a bit confused about if 1st class Eurail pass holders can reserve seats in the premium coaches, have meals included, and also use the Sala Club Lounges in Spanish train stations before departure.
Below is the screenshot from the article on Seat 61:

We will take the train from Paris to Barcelona, Barcelona to Madrid, Madrid to Seville in separate days. We were wondering if we could use the Sala Lounges in both Barcelona Sants Station and Madrid Puerda De Atocha Station. If so, maybe we could book a slightly later train in the morning so we could spend some time and have some breakfast in the Sala Lounges.
Thank you in advance :)