I am of the opinion that on the leisure front - you'll see a very slow return. Consumer confidence will be low. Many have been financially decimated by the current environment. Many will be leveraging debt to get by currently. Holidays won't be on the table for many, likely for a year or two, as they try to recover their financial position. Further to this - airlines will likely be a little different too. They're smaller I think, in response to demand. This will push up cASK. With higher cASK - yield is eroded. To counter - airlines will increase fares. With leisure mostly price elastic demand - we'll see fewer travellers. Not sure on a flood of 'bargain basement, loss-leading offers'. I could be wrong. I hope so.
Attitudes are different now. Mine is. Life will be different. Maybe that will fade over time, as the younger get older. Who knows. The world will be different. So will behaviour.