My only prediction is that mass tourism is dead, at least for a couple of years.
Agreed.
Countries oriented primarily on tourism are about to face full and utter economic collapse, which will be followed by social and even ethnic unrest where exist other conditions for that.
It's hard to imagine anyone being willing to stay in mega hotels with 1000+ guests
Also, agreed. The way how people comprehend tourism already change. Smaler, more intimate and isolate locations will be attractive. Mountains and forests get on importance.