We flew with Aer Lingus into El Prat last week for a family holiday. Everything was fine until we exited the baggage hall. It was into a desolate hall, I mean nothing in it - no staff, shops etc meaning no idea where to go for car hire. After walking up & down outside eventually we discovered we had to got from Hall A to B. Why no signage or advance warning? Anyway got there and eventually found Firefly desk - yes it's pratically hidden but I was aware of this beforehand. However we then spent 1hr and 50 mins in the queue to get to the desk. Crazy stuff this. Another 10 - 15 mins outside getting the car. I looked on the way back and it was the same. So Firefly is cheap but be prepared for a long wait - all other desks had only 2-3 people waiting.