This was on the email we got:
Please note that if you plan on staying at the Four Seasons Hotel Sydney, on the morning of embarkation you will enjoy a light breakfast at the hotel prior to being transferred to Seven Seas Mariner.

and this is on the Preliminary Vacation Summary we received a day or so ago:
15DEC2018 Motor coach service from FOUR SEASONS HOTEL SYDNEY to SS MARINER

My question is: Will they do the cruise check-in at the hotel? That would save a lot of waiting in line at the terminal.