What is an obvious sign it is Christmas Madness time where you live?(both)

Today I went to Cannington Carousel Shopping Centre. (I caught the train rather than drive. Me not silly.)
290 stores. 4300 parking bays.
On arrival I see the car parks are full with people driving around in circles waiting for a spot to become free.
I noticed a guy unloading his purchases into the boot of his car, push the trolley away which then hits the front corner of a car cracking the light. We locked eyes, I walked on.