Hi Daniel,
I'm a long time reader, but first time poster on these boards. I just read your blog, and seeing that I know Sydney fairly well thought I should give you a couple of recomendations for your stay:
1. Sydney Harbour Bridge Climb. It's very taxing but well worth it, the views are magnificent, and the guides have a great sense of humour.
2. Speed boating on the harbour. Exhilirating!!
3. Manly Ferry. Take a nice trip across the harbour, and just hop off the boat, and try a couple of pubs (most have good vegetarian menu options), or stroll along the beach.
4. Rockpool restraunt. (if you can get in) My wife is a vegetarian, and swears by this establishment.
5. If you are still there on Saturday Morning, take a look around Paddington markets. It has some cool arty type stuff to buy, and a great food fair from around the globe with a lot of different vege options. It's on Oxford Street. Yes, that's the "gay" street you were on today.
Anyway, hope you enjoy your stay, and good luck with the "project" you are working on.
) The Australian and Powerhouse Museums are good, if you like that sort of thing, or take the ferry over to Taronga Zoo. You should definitely do the Sydney harbour Jet, so much fun!!! If you wanna go a bit out of Sydney, you could check out Bondi beach (weather permitting), a very touristy destination.