frank keys cafe in key largo
Haven't heard anything about Frank Keys. If you try it, hopefully you could post a report.... I'm an unabashed Mrs Mac's fan. Their onion rings stand tall, as does there fish sandwich (though in all honest, a good fish sandwich is not too hard to find in the Keys.)
Sundowners is another good and reasonable restaurant in the area. And it's also a good place to, need I say it, watch the sun go down...