"Magnificent Desolation"
In the Keys, 11 meters is fairly quiet. We get truckers on 19 as they bring their loads down. The occasional tourist also makes an appearance there every so often.
As for locals, there is a family that runs a charter boat. They use the CB to keep in touch from house to boat - a not uncommon practice down here. I do the same.
There is a guy about 8 miles due east of me that I occasionally catch on upper or lower 38. He moved down here a few years ago from Nevada.
Some Boy Scouts were talking about setting up a CB radio network down here, but it never got off the ground.
Miami has more crowded airways. but nothing like the congestion from the golden age when there dedicated groups on 2, 4, 10, 11, 13, 14, 18, 22 and others. There was chronic, terrible bleed over across the band. Channel 14 tends to be Spanish. Channel 19 has a regular crowd - not just truckers. The channel 40 guys have made a mess of it with too many linears, to much walking over each other a just overall poor practices.