The first segment, DUB-MAD, in the deed turned out vastly different from plans of a day earlier. Then, EF showed the front cabin with 5 rows, full save for 4 or 5 seats. We were given 2A and 5F iirc. 3A/C was the only open pair on the EF map.

At the airport we had no problem getting reassigned to 2A/C. 5F had disappeared - the cabin had been re-curtained to just 3 rows.

Unrelated and not a complaint - service was good enough - the crew had the worst command of English I've ever heard. In an emergency I doubt they'd even have bothered trying anything but Spanish.

Further off topic, Iberia and BA both use the Anna Livia lounge. I'd concluded the opposite from searching. It's small and offers little more than beverages and cookies (and 3 free Internet terminals), but beats the very crowded general areas.