I got the Qantas Premier Platinum a few months back to get the 120,000 points offer. You get 20,000 each month and I've had 3 lots, so 3 to go. And after the frustrating phone call I just had with them, I'll be churning away in 3 months! Argh.
I rang them (oh god ringing them is horrible, phone trees and pins and date of birth and round and round) to increase my credit limit. I had an old Card Services card with a $25k credit limit, and the new Qantas card only has $10k, and I get nervous. I just canned the Card Services one as the fee is due in a few weeks.
But, turns out, you can't ask for a higher credit limit until you've had the QF card for 9 months. WTF?! Why don't they advise this when you first apply?
The annoying woman did say that if I needed to buy something over that, I could put the money into my account and then could go over my credit limit, I'm really dubious about this as I've heard you can't do it normally, your credit limit on the card is set. But I might end up having to try it.