Okay... thought I'd give some local perspective... hoping not to provide a dampener for those making the journey to CNS to view the Eclipse.
Here's some photos of what our sunrises are like at the moment... pretty typical I think. This is from Sunday at around 6am. For those who want to check out the location in relation to where they may be thinking of viewing the eclipse, you can google the address on maps: it's Aspen Close, Mount Sheridan. This is in the southern suburbs of CNS down in the Mulgrave valley between the two Mountain ranges, so it's certainly not the Northern beaches or Port Douglas, where I understand the best viewing will be over the horizon.
The main point I want to highlight is there is quite a bit of cloud cover due to the mountain ranges. Perhaps you need to head to the Tablelands or out to sea for best viewing... but I'm sure others will know better.
Due east... direct into the sunrise over the mountains but behinds the clouds at 6:05am
North-east toward the city.
North-east again... if you can zoom in, you can see one of the hotels in the city between the trees
I really hope that the event is a success... it is such an exciting event for the local tourism. Unfortunately, I'll be out of town for the event, but I'm sure it will be a great time for all regardless the weather. And don't forget to spend up big while you're in CNS... the local economy certainly needs it!