Being in Sydney for Australia Day (like july 4th in the U.S.A). Best things to do include: Seeing the Opera House & a performance, Water tour of the Harbour, The Bridge Climb, Taronga Zoo, The Rocks, and the Blue Mountains.
Quick Tips: If you are into caves see the Jenolan Caves. Eat in a restuarant in the Rocks and around the Circular Quay. Spend soem time at Darling HArbour. Take The Two Explorer buses (Red-Sydney & Blue - Bondi).
Best Way To Get Around: I walked, took public buses, boats, monorail & tour buses.