In the case of FastPass+, the number of frustrated customers is at least somewhat limited. Guests staying at Walt Disney World Resort hotels can book up to three FastPass+ times per day of their stay, 60 days in advance of their trip. As we are are, as of this writing, about 43 days out from Magic Kingdom and Disney’s Animal Kingdom reopening, only guests who scheduled FastPass+ times in the last couple of weeks are impacted. Guests staying off property can only make reservations 30 days out, so they hadn’t even made it to the beginning of their window yet.
Article source: https://www.cinemablend.com/news/2547182/why-disney-world-had-to-cancel-a-bunch-of-stuff-to-let-people-back-into-the-parks