skeltonl, yes I'm thinking IC Syd actually and also IC Perth for next month. I just rang the PC reservations centre and the person did not know for sure either but went and checked with her supervisor who said that it would be fine to book the 10% of BAR rate with the BOGOF voucher. So, I went ahead and booked it online. No advance purchase available for my dates even though it's more than 14 days in advance.
The email you got from them doesn't surprise me though. I'm sure they won't be happy to see me back again so soon