It is simple in Florida. A shed is a structure and you need a permit. It also has to meet the wind code so you need engineered/stamped plans. Those rubbermaid and sheet metal deals at the home store are not legal.
There is no such thing as a temporary shed.
It will also require a permit if you take power out there and it will have to be GFCI.
YMMV depending on how diligent your code enforcement officers are and how nosy your neighbor is.
The guy across the street from me did get busted. (10 days to tear it down, bring it into compliance or pay $250 "dailies").
Fortunately the guy who ratted him out moved but that didn't help the neighbor.
