I sew, and I am also a Medical Professional ( retired ) I have made many masks for all sorts of people...from 1st responders, personnel at the DOC, Cancer patients, heart patients and yes, kids on the Autism spectrum ( my son, my grandson, my nephew and my 2 great nephews..) since this started and One thing is important to remember....these masks aren't to protect you FROM someone else....but to protect THEM from YOU in case YOU are asymptomatic. That being said....most ADULTS don't wear masks correctly, or touch them / adjust them constantly, use the same one over and over without washing, pull them down whilst touching the outside of the mask etc. I really don't see kids wearing these in WDW or DL, for HOURS without having a meltdown. Even ADULTS pull them off or wear them around their necks as soon as they are outside a store etc. For me and mine, we'll forgo WDW until they do away with mandatory masks. Hopefully, they will go the way of
Walmart, Publix etc and if you WANT to wear a mask....you can.