You have to sign up for their newsletter.
I went last year, and collected many free things (actually, you trade it for your personal details). And then a lot of unsubscribing post-expo.
Description from their website:
When
Friday 24th to Sunday 26th October 2014
Open: Friday 10am - 4pm
Saturday and Sunday 10am - 5pm
Where
The Melbourne Exhibition Centre, South Wharf
Expert advice
Find the answers to your burning questions - get friendly, informal advice from:
Government departments
Health organisations
Industry professionals
Respected support groups and companies
Feature Areas
Huge range of products
See, try, and if you want to - buy!
Hands on displays and demonstrations
All the latest products and innovations
Try before you buy and make informed choices
Enjoy the expo for the full three days
All tickets are valid for re-entry on any day, as many times as you like
Enjoy the expo at your leisure
Come and go as you please
Return with family or friends
Take advantage of special offers
Many exhibitors offer:
Special expo-only pricing and packages
Discounts on big-ticket purchases
Competitions
Free samples
Thanks very much. Secured tickets. :)