I was organising a weekend flyaway with few friends in three aircrafts few years ago. I thought it might be a good idea to phone the number in ERSA to book three slots for harbor orbit. Here's how it goes.
Me: Emm can I reserve three slots for harbor orbit on this date?
Airport worker: No I'm sorry we can't do that. Would you like to make a landing in Sydney?
Me: Emm no?
Airport worker: Alright let me take down your a/c rego and pass it on to the tower.
Me: Okay... (conversion continues)
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Just give them a call and see what would happen
