Got this email since i'm a tripadvisor member. I'm not sure if this will work or not as Australia is not amongst the countries listed, but the request was accepted. And you're not paying anything for this
PS: I tried using the form with a different email address than my tripadvisor email and there were no issues. So guess now, I have to wait and watch if the magnet does come
I tried to register and selected "Other" for country and get the following message "Sorry, we may not be able to deliver to countries not listed above"
There is every possibility you may not receive the magnet.