Ceremony - Palace Rose Garden and Pavilion:

Street parking on Macquarie Street is available but is paid metered. There are multiple paid car parks (closest is 131 Macquarie Street Car Park), though can confirm the Metro (Martin Place Station) is pretty good these days.

Reception - The Eveleigh:

The Foundry Carpark: Please enter after 6pm for free parking. Drive down to the lower level to Section A where you will find the travelator to the Locomotive Workshop. Exit the travelator and The Eveleigh will be on your right, though there is this great app called Uber.