Sorry have to be short running out of time.
Triadic, yes I am aware that this has been covered before and it was not a question it was bringing hopefully to peoples attention that not everything has to be read back
I agree with your summary
NFR will get around to email soon.
visual approach is a cancellation of a restriction/clearance and does not require a readback. Niether do expectations clearance for instrument approaches.
Just because Darwin ATC require it does not make it correct.
Cheers for now.