comment by Abeyro
Iberia's staff sending people with small children to another terminal to sort out problem created basically by Iberia (they issued a BP which wasn't honoured) is a shame, to say the least.

Seriously not impressed, but what kind of 'saved' the day was the fact my wife is a mother tongue Spanish speaker. I can't even start to imagine the hassle without being to communicate properly with the staff in an airport like Madrid.

As far as the documentation, we have the key documents like the FIM, second IB reservation and complete BP for the BA operated flight, etc.