Travelling by bus on Christmas Day?
If you have a Snapper card, you’ll need to tag on and off as you normally would but you won’t be charged a fare for your travel.
If you are paying by cash, please let the driver know where you’re going and they’ll issue you with a ticket showing $0.
Travelling by train on Christmas Day?
All you need to do is board the train and you can ride for free.
More info in the link