I don't know about getting in these days, but having just finished the course myself, Its a bloody hard course - dont expect to be able to work part time like people in some other degrees are able to, you'll be at uni 40 hours a week and studying your arse off the rest of the time, and you'll spend your holidays on prac work.
I can't imagine they'll lower the cut off that much even with the questionnaire because the demands of the course still require a certain level of intelligance / dedication / hard work, so if you haven't been naturally bright / worked hard enough in the HSC, it would be hard to step it up all of a sudden in a course like vet at uni.