Guy Betsy knows of what he speaks!

Never had any issue flying into OZ with an ETA. End of discussion. Good luck in getting your ETA. Enjoy flying into OZ ^

As for "hypothetically forgetting" to get an ETA... GOOD LUCK in getting an ETA at the last minute. No guarantees you can get one. GB may be able to elaborate - after all, he is in the travel agent business.

The flyer bears ULTIMATE responsibility for getting the needed documents to enter any country. The airline only transports the person and has the right to deny boarding if the documents are NOT in order. BUT we all know that don't we? Hypothetically speaking of course ....