According to the Tri Rail website... Firearms/Weapons State law prohibits the carrying of concealed firearms. It is also unlawful for any person to openly carry any firearm or electric weapon or device. Persons in the possession of a license issued by the State of Florida to carry a concealed weapon...
There a bunch of places right on US 90 as it crosses I75.
Many of them are right next to hotels, so you might be able to use
their parking lot short term.