Walt Disney World Resort has just announced starting tomorrow (March 16, 2022) face coverings will no longer be required whilst riding the Disney Skyliner for fully vaccinated guests. Guests who are not fully vaccinated will still be required to wear face coverings whilst on the Skyliner.
Face coverings will also be optional for fully vaccinated Star Wars: Galactic Starcruiser Guests on the transport while traveling to and from the Halcyon starcruiser and Batuu.
At this time, face coverings remain required by all Guests (ages 2 and up) on monorails and Disney buses.