Maybe I should have called the gallery "Australia Daze Balloons"
Parramatta Park is a favourite place due to the colourful mass balloon launch at 6am or so. One for the early birds.

The city has its own all day events with ferry racing etc. & ending in the inevitable fireworks session for the families and Darling Harbour will be host to a 9pm to 6am dance party [Headhunters] for the stayers.