Of course, AC is not running trips during the COVID era and these leaders could be scattered to the four winds and off in another chapter in their lives when tours resume (much like the staff at your old favorite restaurant).
That's a very good point and one I had not thought about. This is going to be an issue in a lot of seasonal industries and other non-career jobs as well. Furthermore, even if we do get a vaccine early next year, it will take many months before everyone who wants it, gets it. That will push up against summer season scheduling and create a lot of additional uncertainty. I would guess that next year's schedule will be pretty impacted by this as well and available slots in what does go off will be snapped up more quickly.