basically, its open from 9-4, free buses from central. All faculties will be represented in the great and mclaurin halls in the main quad (the big sandstone building) and the ppl will be able to help answer questions regarding your choice of uni course. The day is designed to provide information, not promote the uni, i mean, people will not be specifically selling Sydney Uni, they will be helping to inform you about your options, and if Sydney is not the best option for you, we will tell you.
There will also be sort lectures during the day for all of the different courses, and plenty of ppl around to help with enquiries about fees, deferring, etc.