Forgive the copy and paste job (with a bit of commentary):
- free parking with entry after 4pm
- complimentary gift advisory service
- one day only special offers
- a glass of bubbly
- live entertainment
Below are sales planned by some of the shops:
ABC Shop - 10% off everything (excluding gift cards)
Australian Geographic - 20% off all full priced items
Calvin Klein Jeans - 30% off storewide (Excludes underwear, socks, jewellery and watches)
DC shoes - 30% off full priced DC merchandise
General Pants Co. - 15% off everything (apart from two for deals)
Jay Jays - 30% off storewide
JB Hi-Fi - 10% off Apple Computers (excluding iPods and iPads) and lots more discounts in-store including door prizes
Myer - 30% off all Women’s apparel excluding concessions. 25% off full priced Children’s Clothing and Footwear
And lots of other stores I can't be bothered mentioning.
EDIT: Sorry for the oversight, as mentioned in the comments, the day is Wednesday, the 23rd of November.
For those interested, and cause the OP did not mention the date, it's on tomorrow 23/11/11. Ends at 10PM.