You should bring a copy of your booking confirmation to the car park with you. The car park has automatic number plate recognition (ANPR). Give us your car registration number when you book and you'll save yourself time when you get there. You'll need to wait at the entry barrier while the camera reads your number plate. Don't press the button for a ticket - the machine will give you one automatically once it recognises your number plate, and the barrier will lift. Then you can just drive in and park. If the machine doesn't give you a ticket, press the intercom button so you can speak to a member of staff.
You don't need to go to the pay machines in the terminal. Drive to the exit barrier and put your ticket into the slot - the barrier will lift automatically. If it doesn't, press the intercom button. Make sure you have a copy of your booking confirmation with you.