Except even an HR department that is fully optimized is right-sized for normal turnover and normal seasonality, not to mention normal immigration policies. They're not optimized for a once-in-a-century global pandemic and two consecutive Presidential administrations of closed borders. Even if Disney had infinite HR resources and lightning-fast onboarding, they can't
increase the population of Central Florida.
That's not a thing. Cast member block-out calendar:
View attachment 640818
"Red" means all four parks are blocked out. "Yellow" means one to three parks are blocked out. Notice all of the red and yellow?