You should have a good shot at clear skies down there, since most of it is desert wasteland with great seeing most days of the year. Watch out for the poisonous snakes. They are known to be among the most deadly anywhere. Don't be tempted to box any kangaroos to show off for your fellow travelers. Their punch can kill. No swimming in the North. Crocodile attacks are a common occurrence up there in the tropical parts. Keep an eye out for great white sharks off the beaches. They think swimmers are seals.  

Sorry Dave. I forgot to warn about the giant Australian locust swarms. I don't think they are too common in the area where the eclipse will occur. Just remember, if you are driving (on the wrong side of the road, as I recall) during the swarming season, NEVER turn on the windshield wipers if you hit a dense swarm. The wipers will smear their remains all over the glass, and you won't be able to see a thing. Bad on the two-lane roads all too common 'down under'. The Australian government maintains a web site (really) which shows where the major swarms are located. I forgot the address, but the locals probably know it. Stay out of light planes. Don't forget to get a good look at Omega Centauri while you're down there. It is an amazing sight through a big telescope at high power. It is hard to imagine how so many stars formed in such a small area.

Should you get interviewed on the local TV, please ask them why they still tolerate globes with Australia on the bottom? Why don't they put the South pole on top? You might start a big 'Australia on Top!' movement. It takes off on the Internet, and you could eventually get a statue in front of the Sydney Opera House.  

One more thing Dave, cyclones. Unfortunately, unlike South America, Australia is subject to getting hit by dangerous tropical cyclones. They usually strike the Northern coast during their summer, which is winter up here. If you do a YouTube search of 'Cyclone Tracy' which hit Darwin, and watch the 8 minute video, you will see what one can do. Ever try to lift up one of those old cars? They weighed a couple of tons. Snap off a steel electric pylon?

Since you are going that far, all your fellow travelers might want to make a list of the stuff in the Southern sky that they might want to view, which they can't see from home in the Northern hemisphere. The Southern sky is considered by many to be more interesting than the North. I'm lucky, at 30 North, I can see a lot of it.  

During your eclipse travels in Australia, you may notice an inordinate percentage of vehicles with heavy steel pipe guards across their front, and assume that the locals are enthusiastic fans of Mel Gibson's Mad Max series of films. While many of them are, there is a more practical purpose for the proliferation of pipe guards.

Although the Aussies are a pretty tough bunch, (the total population is still only 23 million for a reason) the guards are there as a defense against hitting the all too common kangaroos, which have a bad habit of ignoring vehicles when crossing the roads. Kangaroos don't look too threatening, but millions of years of natural selection in the harsh desert climate of Australia, has made them quite robust animals. Hitting one is a bit like running into a small tree. One recently jumped through a teenager's bedroom window (it went right through the glass and frame) and attacked him while he slept. The kid's dad, hearing the screams, was able to drive the animal out after a brief struggle, suffering only minor injuries in the process. Fortunately, kangaroos have a low center of gravity, so the chances of one penetrating your windshield is greatly reduced by the heavy welded pipes. If you are driving and see one, or more (they seldom travel alone) approaching the road, it is a good idea to give them the right of way, if you can safely slow down on the pavement. Don't do like the people around here often do, and run off the road trying to miss one, unless there are no trees to hit, or ditches to run into and flip over. That is seldom the case. I know around here in Slidell, they like to continually did out the roadside ditches until they have mini Grand Canyons starting 3 feet from the edge of the pavement. I guess they figure that all the trash the local residents throw out of their vehicles will disappear down there, and eventually work its' way out to the Gulf of Mexico, where they can get BP to pick it all up. Guess what happens if you swerve to miss a raccoon and go into one of those? It does encourage seat belt use. Maybe that is the real reason for the digging?  

Dave, unfortunately everything PeakOilBill has said about our great state here in Queensland is true, there are very venomous snakes and bloody great big roos that jump out at you. But as for the swarm of locusts you shouldn't have too much of a problem, they only appear every few years or so. AS for cyclones well, they are just like your hurricanes you have to take your chances with them, but you are coming at the peak time of the year for them, so hopefully you won't get blown away and will have clear skies and get to see a great eclipse.

A bit more information about when it will be and from where we can see it would be nice though.

@ WizeHowl. Thanks for the verification. As you have proved, despite me never having been to Australia, the Internet is a vital source of accurate information about everything. I was tempted to warn the eclipse travelers from the United States about the language barrier. But I decided, that when compared to the other Australian hazards, the chance that anyone would accept an invitation to visit a 'bikie' club, not knowing that it referred to a motorcycle gang like the Coffin Cheaters, instead of some bicycle club, was rather remote, so I neglected to mention it. These astronomy people are a smart bunch, so they would probably sense something was wrong long before entering one of their Medieval - looking walled urban fortresses. Dave will probably inform them, once they are on their way, that truck drivers (truckers, up here) are called 'truckies' down under. And that if you ask for a ride in a 'pick-up' truck, people will look at you strangely, not knowing that you mean a ride in a ute. Up here, a Ute is a member of a Native American tribe in the Southwest. I've got a mug made by one from the 1984 New Orleans' Worlds Fair.