Actually, the Denny's in a Cuban neighborhood in Miami that was accused of discriminating against balcks had the sense to have a camera near the entrance, proving that blacks waited as long as those for other races. As a result, THAT case was thrown out of court.
Denny's is awful. Cracker Barrel is tolerable. Personally, I prefer the Greek diners in the northeast of Friendly's, neither of which exist in South Florida.