But what if the "illegal activity" isn't in fact illegal? An executive order by a governor may be in conflict with Federal Law or the constitution. See amendment 4 of the U.S. Constitution.
Florida has long been a disaster-prone state and the laws covering restricting movements of people within it during a disaster declaration have been well-vetted. I can remember full lockdowns in the days immediately after a hurricane followed by weeks of disk to dawn curfews including s few times we were kind of racing back home because we'd gone out a bit far and we were trying to get home before curfew.
Heck, Hurricane Michael was less than two years ago and there were parts of Panama City closed to non-residents altogether for more than a month in the name of public safety.
And trying to control disease outbreaks is nothing new here either. Go back 150 years and a little to the east and...
John Gorrie Museum State Park