chmurf, I am afraid I disagree with you as I see the Florida statute as being the law that applies to those people required to hold a driver's licence in Flroida. I honestly don't believe that it applies to International visitors to the US who have a rental car. If it did, the rental companies would be aware (and they aren't) and there would be far more checks in place to make sure you had a valid IDP before you were allowed to drive a car.
In fact,
the previous chapter to that quoted states when a non-resident is required to obtain a FL driving licence. As we would not be required to obtain a FL licence (as visitors to the state) then the exemptions actually would not apply either since we are not required to be licenced in the state (that made sense in my head but doesn't read so well when reading it back).
In other words, we don't need to meet the requirements to be exempt from obtaining a licence since we are not required to obtain a FL licence in the first place. Hope that makes more sense