Details that they provided in the email:-
You've made your New Year resolutions. Now plan your New Year destinations. Bali, Paris, Bangkok, Gold Coast and Cairns are just a few of the destinations where our best hotels are currently on sale.
And as a member, you earn up to 7% back in Member Rewards on every booking, as well as access to special deals such as free upgrades and late check outs.
For a limited time you can also save an extra 12% off your next booking.
WORLD12 - Book a participating hotel in AUD by 11:59pm (US Pacific Time) 11 January 2015 via Hotelclub.com for stays up until 30 September 2015 and instantly receive 12% off your hotel booking. Limit of one promotion code per booking. Promotion codes are non-transferable, not for resale and not redeemable for cash for any reason. Hotelclub reserves the right to change the terms and conditions of this promotion at any time without notification.
- Offers are subject to availability and may change without notice prior to reservation confirmation. Specific offer terms and conditions are available on the website. Rates may not be available on some peak dates.
My comment: Cash Rewards might not apply when using a promo code,but it is still worth going through cashrewards just in case you do get cash rewards.
Ratestogo.com / Cheaptickets.com has 20%, not sure how they compare… (but i think they are both the same parent owner)
secondly waiting out for Accor Hotels 40%/50% sale which usually is about now …