From the webpage:
You're invited to the Grand Opening of famous 1919 Lanzhou Beef Noodle!
Enjoy a festive Opening Ceremony, Lion Dance performance, musicians and noodle making demonstrations.
Plus, free noddle tastings from 12pm -3pm*
*While sample stocks last.
From the poster at Westfield, it looks like the free noodles is a single bowl of Lanzhou Hand made Beef Noodle Soup.
Bondi junction westfield