... contacted Commercial Vehicle Enforcement for Florida's policy.
It's up to the scale operator working at the time whether you get weighed. The operator I spoke with said he would weigh us if the scales weren't busy. He said the best approach is to pull in and park behind the building and come in and talk to them. They would advise you if they would be able to weigh you at that time, and give you directions. He also said your chances of getting weighed were very good at any scale in Florida.
The scales won't be on if the station is closed because it's part of a computer system that's shut down when they leave. Also, there is no external monitor.