London Cab over Sydney Harbour Bridge (pick up is under the Harbour Bridge, on Olympic Drive), Milsons Point, North Sydney (Google Maps Pin - https://goo.gl/maps/MhBkwSXb6EtUkKX4A)
The maximum number of people at the ceremony is 4. That is 2 guests (your witnesses who much be over 18 years old) and the 2 of you.