@Fufan
Everyone's experiences differ
Public or private patient plays a role as well as type, treatment, surgery et cetera
Unfortunately your appointment was cancelled. It's probably worth you ringing to ask if and when you are rescheduled.
As to drain bags. Not everyone is issued with these. I was, however, it was once I was admitted to hospital and my Breast Surgeon's Breast care nurse came along, measured me for a Berlei bra, gave me a bag of goodies including, small shaped pillow, a bag to carry X-rays, leaflets introducing me to BCNA and a DVD which you can source on the BCNA website
https://www.bcna.org.au/health-wellbeing/strengthen-your-recovery/#:~:text=A%20Pilates%20program%20following%20breast,surgery%20at%20your%20own%20pace.
I only knew of McGrath nurses through fund-raising but never thought of sourcing one. Turned out my Surgeon had that covered.
There are lots of resources once you know what you need, for example
Knitted Knockers
http://knittedknockersaustralia.com/Best wishes
Take care