I quite like this from their website (though there's an annoying mistake - Chupa Chup to the first peson to spot it).
Walking and cycling and public transport all before the car option. AND way more bike parking spaces too.
"Walking and Cycling
Victoria Quay is immediately adjacent to the National Cycle Network and provides a direct link (on and off road) with the city centre and the main rail and bus stations.
Visitors are welcome to use any of the 150 sheltered cycle spaces at the front of the building. These cycle racks are monitored by CCTV.
Public Transport Provision
The nearest rail station to Victoria Quay is Edinburgh Waverley, which can be accessed by direct public bus services on Princess Street. There are several bus routes serving the immediate vicinty of Victoria Quay, with the 22 Lothian Bus the most direct service to Edinburgh City Centre which takes about 20 minutes. The majority of the buses are scheduled to arrive every 10-15min.
Car Parking
There are 79 visitor spaces at Victoria Quay allocated on a first come basis.