Thanks Darrell,
Wedding ended up being a great day and went off without a hitch. Much smoother than the process at the RTA.
I nearly cracked it when the guy behind the counter told me he couldn't go any further because the Blue slip guy put "1CV Cobra" rather than just "ICV" (he seriously wanted to argue that the "I" looked like a "1"), and there was no "1CV Cobra" make and model designation in their system. "I dont care what you bloody call it, I've been at this for 7 years, Im getting married tomorrow, and Im at breaking point....just put it through". It took nearly an hour with all his hold ups (not happy with some of my receipts - ebay\paypal not valid, system was down and couldn't look at engineers report, one page after another on the computer screen that he went "uh oh" to and called the manager to look at.
The manager was actually fine and every time there was a problem she came and fixed it without fuss. Anyway at 5:10pm I was out of there with my plates firmly tucked under the arm.
Big tip - keep every receipt (just dont add them up), and photocopy them as the thermal printed ones will fade.
Havent stopped grinning for many reasons all weekend.