FRESH OFF THE PRESSES-
Beginning February 17, 2022, Face coverings will be optional for fully vaccinated Guests in both outdoor and indoor locations. We expect Guests who are not fully vaccinated to continue wearing face coverings in all indoor locations, including indoor attractions and theaters. Face coverings will still be required by all Guests (ages 2 and up) on enclosed Disney transportation, including Disney buses, monorails, and Disney Skyliner.
https://disneyworld.disney.go.com/experience-updates/#drawer-card-faceCoverings
I think if you're in that 2 to 4 range, just do the best you can if you're going to the parks starting February 17 (and can get there via a car)