Booked to park in the under cover short stay car park and on arrival at the boom gates was allowed to enter the Priority car park which I thought was the short stay car park as it allowed me in and was under cover, Having never parked in Aberdeen Airport before I mistakenly thought I was in the right place. When it came time to leave I was asked to pay an extra £18 (not a lot of money I admit) from the lady at the customer service office after asking why she said because id parked in the wrong car park after trying to explain myself to her she just smirked and shrugged her shoulders and said "oh well", which then really annoyed me even more I work in customer service and shrugging your shoulder and say "oh well" isn't a great way to solve a problem. After asking to see the manager who was very good and explained how id made the mistake of being in the wrong car park I then paid the £18 and left. My point is when parking at Edinburgh Airport the boom gates only allow you in to where your supposed to be parked, you don't drive through one parking area to reach your's therefore avoiding any confusion.