I’ve probably read most of the McGee books, and I don’t recall him ever visiting Cedar Key.
I’ve read all of his Travis McGee novels, most of them three or more times. I seem to recall he did visit Cedar Key to visit a female character in one if his investigations... But it may have been a different location. I’ve admittedly slept multipl times and had a few adult beverages since I red the series. McDonald was one of my favorite authors, and I learned an awful lot about human nature from reading his novels, novelettes, and short stories... Not just his Travis McGee series.