Found the link on the home page of the Flight Centre mobile site.
Similar to this deal: https://www.ozbargain.com.au/node/253695 with the added bonus of a $200 flight centre Voucher.
Here are some t&c's for the promotion:
"*The $200 discount offered by Flight Centre is available to new and approved applicants who apply by 21 October 2016 and are approved for an ANZ Rewards Travel Adventures credit card account and who spend at least $500 on eligible purchases using their ANZ Rewards Travel Adventures credit card within three months of approval."
"This offer applies only once per eligible customer. The unique promotion code is redeemable at Flight Centre retail stores within Australia. Customers must provide their promotion code at the time of booking [online / in store] for the discount to be applied. The $200 discount is available only for new bookings made within 6 months from date of issue of the promotion code. The full value ($200) must be redeemed when the promotion code is used, partial redemption is not permitted. Once the promotion code expires, it will be void and cannot be redeemed. The promotion code cannot be used to purchase gift cards and cannot be used towards cash, credit or foreign exchange products including cash passports. The promotional code will be sent to your email address nominated at the time of application for the ANZ Rewards Travel Adventures credit card account within one month of the eligible spend criteria being met. If you transfer or cancel your ANZ Rewards Travel Adventures credit card account before receiving the promotion code, you may become ineligible for the $200 discount."
Value is questionable, what's the mark-up on flight centre compared to direct bookings?