Florida Keys STR minimums

[Dalton Clem]

Hello. I see that in the Florida Keys you have to have a week minimum when renting houses, etc. Though on airbnb plenty of places are renting out 1-2 days minimum. Are they doing this illegally or is there a loophole I am unaware of?

I am curious as my fiancé and I are moving to the Keys and are toying with the idea of doing short term rentals as well. 

Thanks!