No offer as of yet, when did you get the letter? I thought I would have had a shot, considering I'm rural and had heaps of work experience. Maybe not.
Congratulations! I too have heard that the questions are different, though obviously there is a similar trend. Be prepared for 'Why Veterinary Science?', 'Why the interest in rural veterinary medicine?' etc. Also, make sure you know a bit about the university and what it offers, they'll love to hear you talk it up. But don't fear, they give you 20 minutes in a room alone to 'reflect' on the questions they'll give you (last time I checked). Good luck!