I agree with
@wdwmagic in that it will be interesting to see what Disney does here.
I think they've (Disney) made it pretty clear this is not a move they wanted to make. Otherwise, they would have already done it when Demings asked them to. They certainly have had more than enough time to.
Keep in mind, they don't have to do anything at all without an official mandate, but if they make it "Optional, but Recommended", that is a mistake. I get they don't want to police people, but only a fraction of the people will probably mask up if it's not required. Moreover, the people who would mask up are more likely already going to be vaccinated or have been wearing masks already. Thus, no impact on the numbers.
The people who can be vaccinated and have not are the same people who refused to mask up last year.