On Monday, September 14, 2015 at 12:52:41 AM UTC+3, wrote:
Hi,

Your commercial license may help but is not sufficient to fly solo. More important to bring your log book. To fly here requires you to be a member of the GFA (Gliding Federation of Australia)and a club. To fly solo will require most likely a number of check flights, number depending on your proficiency.

You'd imagine a strong possibility that for someone with a CFI and commercial that number would be "one". Certainly if the glider used is the same as or similar to what they've flown before.