Hey mate,
I recently booked a holiday to Hamilton Island, went through Flight Centre, I had my doubts about the prices they would quote but when I went home and researched it, the flights and accomodation were the same/slightly cheaper than if I did it myself through the internet, plus they did everything (ringing places, organising it all), I just had to provide my credit card
I was up in Brisbane last weekend, the weather was beautiful, but I understand it was still raining a fair bit further north.
Hope this helps.