Hi Jeff, I have just been trying to do the same thing as you. Site says the VIP tickets go on sale 6pm 18th CST.
I just checked the world clock and that seems to be 9am Friday our time. That is the same time the tickets go on sale at Tamworth. Now the hard decision is....do we waste time on line trying to get VIP tickets? Or do we line up to get tickets through Tamwort? I see a risk in missing out all together. Dilemma!!!!
Hopefully see you there. 
Sylvia