2wealfth Man said:
Wilcat, you may know this already; but just in case. You have to have a visa to enter Australia. You can go online and apply for an electronic travel authority. If you just show up without your name on file in their system as an expected arrival I am not sure what happens. I think the fee is something like 200 AUD.
You have to have your Electronic Visa in the system or they won't even let you check-in for the flight to Australia.
I also recommend carrying a print out of the Electronic Visa just in case. Some of the ticket counter agents run into problems from time to time.
As far as the application process, you do it online, it costs like $10 and takes maybe 10 minutes - or so I'm told. My process to become a Permanent Resident took closer to 4 years
And unless you're doing 12+ International Trips a year, I still don't know what all this fuss is about Global Entry. Literally, you save 5-15 minutes at the airport when you're returning to the USA. Sometimes less.