and airlines and travel agencies need to come up with mitigation measures to increase traveller confidence.
I think you're right, but I'm not sure how they can provide a cast iron guarantee.
I operated into a couple of Asian destinations from Europe end Feb/March and with the best will in the world there was no spare capacity to get everybody out who wanted to come back to Europe early/off schedule...
There was then another complication on one flight when the destination imposed very stringent arrival/departure restrictions almost overnight. Local politicians got involved and they considered denying inbound clearance to one of our flights that was actually en-route.....When that sort of nonsense goes on at a political level there's only so much an airline can do in the way of guarantees and mitigation.