We just got back from sailing February 3 -17th. We sailed in to Sydney at 9am and were able to get off the ship by 9:30 a.m.
On Sunday, the bus took us directly to the airport from the ship about 9:30 a.m. and we had to sit in the airport until the flight home. The airlines would not let us check in before noon for a 3 p.m. flight.
Hope this is helpful.