I hate to put a dampener on your expectations but I think yes there will be an initial uptake to fly out the country for those that just "must travel". After that will be much more sluggish increase back to pre covid. Reasons is this. I am your typical retiree cashed up with plenty in super who before covid enjoyed travel abroad including taking cruises as did 3 mates of mine also retirees. We have lunches together now every couple of months. This subject came up only the other week when all of us said there is no way we would book an overseas holiday or cruise until we were guaranteed 100% money back if the trip was cancelled due covid. Vouchers are no good. There are too many restrictions with them as to when you can go and locks you into one airline/ cruise company. Cash speaks loudest, and gives you options.
Secondly long quarantine periods at either end of the trip has to go. Just a waste of a holiday if you have to be locked away even for a week. Thirdly masks have to go. To have to suffer wearing one for around 30 odd hours to Europe for example which is what it is once you add in the time at airports each end and in transit if required is just too long. Sure a couple of hours is bearable on a interstate trip if you must, but quite another thing long distance. Just can't breath in the bloody things besides anything else. That is not a holiday, it is a punishment.
I don't think we are alone in our views as I suspect the majority of tourist feel the same . I often hear similar views out and about as does my wife. Sorry if the above is not what you wanted to hear but that is the truth of it.