Since you only have six days in Sydney, can I recommend a
Sydney Pass?
It covers transfers into Sydney on the Airport Express Bus (and back again), covers you on ALL government buses (including the Sydney Explorer, Parramatta Explorer and Bondi & Bay Explorer), as well as ALL ferry trips operated by State Transit - including to Manly (ferry AND JetCat), Taronga Zoo and Parramatta. Also includes harbour cruises.
Highly recommend this if you are only having a short stay.
Dave
[This message has been edited by thadocta (edited 01-03-2003).]