M14 Shooter
The Light of Truth
I carried into an OH bar and grill that did not have the sign posted at the door, but at the bar.You are correct.
Since Florida is mostly a free state a business owner can post all the signs he wants to tell a customer not to bring in a weapon but that sign has no force of law.
I always ignore those signs and carry anyhow if I want.
I think most states are like that.
As the sign must be at the door, I went on my merry way, Oddly enough, no one died.