Rude Number Plate:
If you enter a rude profanity at the opening of the game when you are asked to enter a personalised number plate you will be told by the narrator of the game that this is a family game.
Free Fast Travel to Festival Sites:
If you go to the 'Pause' menu and select the 'Cars' tab and then 'Autoshow' you will be able to transport to the closest festival totally free. This can be done instead of fast travelling via the world map.