Do you have media accreditation?

If you don't then their terms and conditions of entry mean that you will save some dollars by not buying a new lens.

http://www.clubsonline.com.au/custom...=3010201023817

Quoted from there ----

17. Can I take and use my camera at the event?
No, you are not permitted to bring your camera and take photos of the players on any day of the event, including the practice day and Pro-Am day. Only people with official media accreditation will be permitted to take photographs.