I keep seeing allusions to "fear." Why should Disney put measures in place? If you are "afraid" to catch this virus, you should not go.
It's not as simple as that. My family is not concerned at all about catching the virus. My DH is a healthcare worker and has seen multiple patients with COVID that were not yet diagnosed with COVID when he saw them, but were diagnosed once they were admitted. We have all been just fine. We are under 65, we are not in any of the high risk groups, we live 1500+ miles away from family members that are high risk, and we lead a healthy lifestyle.
But, I completely believe that measures have to be put into place because I would not want anyone visiting WDW to become an asymptomatic carrier and bring the virus back to the most vulnerable people in their community. And this is not something Disney is going to compromise. And they are not going to wait until the "virus goes away," or until there's "a vaccine," or "treatments" because that is not a solution that will allow them to open this year.
They are going to put measures in place, but guests will have to help in creating a culture of effectiveness. One measure by itself will do little. But, multiple measures together will effectively reduce the chance of transmitting the virus. Guests will have to pay attention to social distance guidelines in the park. They will have to wash hands frequently and use sanitizer. They will have to comply with any guidelines regarding mask use.
Over the past few weeks, we have been wearing masks on a regular basis. My DH walks to the hospital and he wears his mask all the way from home to the hospital, all day there, and back home, and he is very sensitive to heat and has not had any issues (and today's high in ATL is 85). If Disney requires masks, we will put on our masks to protect those around us. If Disney makes masks optional, we will likely not wear them because the point of the mask is to have everyone wear their mask to protect those around them.