Was very surprised just how significant a saving could be made by pre-booking saving £50 for 3 days! Booking process was simple, the car park was well signposted which made it easy. Buses were regular although must say that the shelters both at the airport and the park itself were pretty useless affording little protection from the elements! Only issue I had was that on leaving the park my ticket wasn't recognised as having been pre-paid which gave me a bit of a shock as the screen flashed that £80 was owed but the lady at the end of the buzzer was very helpful and resolved issue quickly.