At The Cheesecake Shop
$5 birthday discount code emailed every year on your birthday (plus a $5 welcome discount code on registering).
Conditions: Free registration to The Cheesecake Shop mailing list / cake-vouchers club at cheesecake.com.au (the register form's Date of Birth field is labelled 'a birthday treat just for you'); discount code sent on the birthday. Official wording is simply '$5 birthday discount' — historic vouchers were valid on full-size cakes only and not combinable with other offers, so 'any cake' in the seed may overstate scope.
Perkroo lists the perks the memberships you already hold include — sorted by what’s nearest to you.
Perkroo is an independent Australian app. The Cheesecake Shop are named for identification only — Perkroo is not affiliated with, endorsed by, or partnered with them. Offers change at the provider’s discretion; check the linked page before relying on one.