<p>Cash and cards can be used on all food, drink and souvenir transactions in catering and souvenir outlets with the exception of two venues in locations away from the main estate and all vending machines, where only card is permitted. The reason for a cashless policy at the two outbuildings is due to security constraints on the transportation of monies between the outbuildings and the main Palace. The cost for monies to be collected outweighed the cash taken. Vending machines are procured as card only for security reasons.</p>