Skippy, 7 timer, weather zone, accuweather, clear outside, none of them display the regional ACCESS model. So it doesn't matter how many sites you look at until you're blue in the face, you're still looking at a forecast which is a global forecast, not regional. You're wasting your time.
CFN is currently the only site in Oz that gives you an accurate regional model. If you're located in Australia there's absolutely no point looking anywhere else. Period.
Unless you like taking chances but the odds are stacked against you big time. You'll be screaming driving back home under clear skies after packing up or you'll be screaming under the rain 300km from home at a dark site looking at a clear forecast map. Pick your poison.
Personally I appreciate that when I'm driving over a 1000km from Sydney to Astrofest I'm going to get 5 clear nights. And it delivered, right on time. CFN was the only site giving me the info I needed.