our area is running about 80% as well. I figured if they wont let me in without then they need to provide the mask....
If a person has a disability that precludes wearing a mask then you would assume they will have to make allowances just like they are required for other disabled folks.
Discriminating against the disabled is usually frowned on both in society and especially legal circles. ADA lawyers would line up for those lawsuits by the droves.