In terms of holidays summer will recover very quickly. The demand is definitely there and summer generally corresponds with a decreased incidence of Covid and other Coryzal type illnesses.
What is a complete unknown is the winter ski season. This winter will be a big test, by then we should have a vaccinated population and vaccine passports. In theory this should allow the winter season to go ahead. If it doesn't airlines will hurt, as well all the ski resorts who realistically can't afford another winter of no revenue.
...and I really really want to go skiing!