You can find a map of the participating cafes here. They appear as green pins.
Specifically, the Melbourne cafes are:
- Acustico
- Alimentari
- Archies All Day
- Calēre
- Chiaki
- City Saints
- Bench Coffee Company Roastery
- Green Refectory
- Kōhī No Deshi
- Plug Nickel
- Proud Mary
- Sonido
- Tarts Anon
- Walrus and Wood and Co Coffee
The participating Sydney cafes (kudos CaptainHoltisDad) are:
- Brighter Coffee, Stanmore
- Black Market Roasters, Marrickville
- Soulmate, Newtown
- Superfreak, Marrickville
- Tokyo Lamington, Newtown
In theory you're supposed to call 1800 628 349 to get a code phrase for the free coffee, but the above map link reveals that the phrase is:
OAT DEALER
More details on UrbanList or ConcretePlayground.
![[VIC, NSW] Free Oatly Coffee at 1 of 17 Cafes by Saying a Phrase (Collingwood, Brunswick, Fitzroy, Newtown, Marrickville)](https://files.ozbargain.com.au/n/49/866349.jpg?h=d7b3cf5d)

If any one legitimately says says that code phrase they deserve to get free oat coffees for life… and probably some psychological help