I went today. It was good, heaps of stalls for different unis and after school options. It was very worthwhile, but it was pouring in Sydney today and the roof of the place was leaking. >_>
I was thinking of going tomorrow but our school is making a compulsory excursion for us to go to something very similar so I don't think I will. It's so far from my area and the rain is a turnoff :/.