FL does have open carry for the average citizen (those not in the military or LEO) but it's very limited

The 2012 Florida Statutes
790.25(3) LAWFUL USES.—The provisions of ss. 790.053 and 790.06 do not apply in the following instances, and, despite such sections, it is lawful for the following persons to own, possess, and lawfully use firearms and other weapons, ammunition, and supplies for lawful purposes:
(h) A person engaged in fishing, camping, or lawful hunting or going to or returning from a fishing, camping, or lawful hunting expedition;
(n) A person possessing arms at his or her home or place of business;

Statutes & Constitution :View Statutes : Online Sunshine

When I get a new pizza delivery person come to my house their eyes either open wide in surprise but say nothing, or they say something to the affect of "Oh, cool" then ask me what kind it is.