If you enjoy culture and are in Sydney, a must-do is seeing the Sydney Symphony at the Sydney Opera House.
To book tickets, simply go to the Sydney Opera House box office. Tickets range from about AUD$40 to AUD$93, but the $93 tickets are worth every penny!
Expect a much smaller performance hall that what it seems it should be—I was very surprised by this. Know also that formal dress is not required; they indicate that 'jeans and a smart shirt' are fine, but I would go for khakis and a smart shirt at a minimum. Also know that you will end up spending money on drinks either before or during the intermission of the performance—so bring extra money.