Win $5,000 of Haier Appliances from Haier

Guess the number of tennis balls in the washing machine

T&Cs mention that entry must be via the QR code onsite, but there's also a facebook post with the QR code (00:44) and video of the washing machine (00:42 - 00:43) here: https://www.facebook.com/WideWorldOfSports/videos/how-many-tennis-balls-can-fit-in-a-washing-machine-/3440225702775695/

The winner will be the entrant who correctly guesses the number of balls.
If more than 1 entrant guesses the correct number, the winner will be determined via prize draw.