Still it’s comforting to know from past experience that Syd ATC hasn’t changed in 30 years!!
Back in the late 60s/early 70s it was rarely a problem to drop into SYD for a jolly. Obviously one routinely avoided peak hour but, even then, a phone call ahead generally found a gap which worked for everyone. Have a few slides in the archives taken from lighties while so operating. Everything was simpler back then, I guess ....