Disney appears to be adjusting the criteria for Disney Park Pass availability at Walt Disney World following the introduction of park hopping on January 1 2021.
It now appears that same-day Disney Park Pass reservations can be made even if the reservation availability calendar says none are available. We tested this today by trying to make a reservation for Disney's Hollywood Studios. Early in the day, the park was listed as not being available, and attempts to make a reservation failed. However, at around 11:15am, it was possible to make a reservation, despite the reservation availability calendar indicating there was no availability.
This has likely been introduced as part of the new park hopping ability for theme parks that begins at 2pm. Disney may have found that guests have been randomly making reservations at any park, with the intention of then hopping to the park of their choice at 2pm. Giving guests the ability to make a same-day reservation for a park removes that need and may help Disney manage crowds more accurately by using reservations instead of park hopping.
Disney has yet to make any announcement regarding any possible change in policy, so at this point the information should be treated as speculation that may change at anytime. Thanks to @TheVisonarySoul on the WDWMAGIC Forums for spotting the change.
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