I've got another couple of codes to try at Z.
These two codes worked on three existing accounts we have in our household and one new one I made to test.
Thanks to wowbigdeal who was able to confirm that it worked on some of his accounts too.
I am based in Christchurch so not sure whether location (Christchurch or South Island maybe) are influencing factors.
THANKS - free hot drink + 10c off
THANKYOU - 3x Car Wash (although says expires in 1 day, 3x free hot drink, 3x 10c off!)
If both codes work you will end up with 3x car washes, 4 hot drinks and 4x 10c off per litre.
Note: The car washes all say 'Expires in 1 day' on my app but the drinks and 10c all have 90 day validity.
Update: If the codes don’t work for you today then try again tomorrow. There are many instances where they now seem to work after initially not being successful. It appears there are limits on the number of codes used in a day so don’t give up!
This is bound to not work for everybody but hoping it will work for at least some of you.