28 Degrees sent me an email with link to Mastercard Travel Rewards - this may also be available to other Mastercard holders via their own bank.
Lots of offers around the world and online to explore. Signup could be necessary, check the terms of the offer carefully.
A selection of the offers available that apply in Australia:
Online
Receive 3% cash back on your purchase at Groupon Australia. In theory this should stack with CashRewards / ShopBack when you pay directly with your Mastercard.
Receive 4% cash back on your purchase at Apple Online Australia. Signup is necessary. Exclusions apply. Check terms carefully.
NSW
Big Bus Tours Sydney - Spend $50, receive $10 rebate
Escape Hunt Sydney - Receive 10% rebate
Illawarra Fly - Spend $50, receive $5 rebate
Madame Tussauds Sydney - Spend $100, receive $10 rebate
SeaLife - Spend $100, receive $10 rebate
Sydney Tower Eye - Spend $100, receive $10 rebate
Virtual Room Sydney - Receive 10% rebate
WildLife - Spend $100, receive $10 rebate
QLD
SeaLife - Spend $100, receive $10 rebate
VIC
Curry Vault Indian Restaurant & Bar - Spend >=$30, receive 10% rebate
Legoland Discovery Centre Melbourne - Spend $100, receive $10 rebate
Otway Fly - Spend $50, receive $5 rebate
SeaLife - Spend $100, receive $10 rebate
Virtual Room Melbourne - Receive 10% rebate
Example of Terms of use Check the terms of any offer that appeals to you carefully.
Qualifying transactions are limited to those processed by Mastercard and can only be made with an eligible Mastercard card.
Offer is limited to one redemption per venue per cardholder during the promotion period. Cash back will be earned in-store only. Not valid for online purchases. Valid for purchases made in AUD only.
If Mastercard does not receive information that identifies your transaction as qualifying for the offer, you will not receive a statement credit. Statement credit may be reversed if qualifying purchase is returned/cancelled.
4% off apple store