Edit: To Add
The closest Walmart to me has employees at the door to harass people or mask check or whatever they're doing. The Walmart 15 minutes away have the employees appearing to do the same shit but also have sheriffs with them. That Walmart absolutely does demand non maskers leave and return only when they have a mask. The sheriffs are there to make sure you leave when asked to do so by the employees.
What announcement are you referring to?
Edit: To Add The closest Walmart to me has employees at the door to harass people or mask check or whatever they're doing. The Walmart 15 minutes away have the employees appearing to do the same shit but also have sheriffs with them. That Walmart absolutely does demand non maskers leave and return only when they have a mask. The sheriffs are there to make sure you leave when asked to do so by the employees.