Sydney, half way through stop over

We have been in Sydney 5 days now, and have done the usual tourist trips, such as Darling Harbour, Aquarium, Opera House and Bridge, Botanical Gardens, Sydney Tower and so on. Have walked a fair few miles! Weather has been mixed, on the whole mild temperatures, some sunny, some wet days. We have a day trip to the Blue Mountains on Friday to look forward to, plus we are seeing a show in the Opera House Thursday evening. We would also like to get to Taronga Zoo and see some of the beaches, Bondi or Palm (of "Home and Away" fame!). All in all, having a great time so far !