I just wanted to warn Mumsnetters to be careful when choosing car hire. We recently booked and paid for car hire through Alamo. Upon arriving at Malaga airport we went to the National Car Hire desk (who represent Alamo) only to be told that they didn't have any cars left for us. Their attitude was appalling to say the least and we were forced to hire and pay for a car from another company. We are awaiting a satisfactory response from Alamo and will be taking this further.
I am posting this not only because this happened to us but because there were at least 2 other parties that this happened to and we spoke to people when were on holiday who had been let down at the airport. I would urge you to call your rental company before you go toc confirm a car will be available.