I certainly won’t be booking internationally until I see at least 4 to 6 months of.
Life in the country or countries I want to visit carrying on as normal. By that I mean no lockdowns, no closure of their internal or external borders, no events like sporting, theatre etc being cancelled etc etc
no quarantine required either before you leave the country or upon return to Australia
no internal border closures. No point flying from Sydney to say Hawaii or wherever but on return not being able to get back to your home state of Qld or WA etc.
I cannot see all this happening at the start of 2022. For example the UK is now cancelling many theatre productions despite being opened up. And many European countries seem to change from green to orange to red etc. many people travel to Europe to see more than one country.