I used a code that I found on here which saved me a LOT of money for a 24 hr rental in Spain - I mean in the order of €80. For the first time ever I was asked for proof and I simply said that this was booked for me by the organisation and not myself. Since I was old enough to be the Agent's mother if not Grandmother - that was the end of that. There's hardly any stock and frankly any rental is better than the car sitting in the lot.