To me Sunday evening and Monday are dull, once the race is over it seems that even though a lot of people are still in town the atmosphere totally changes, sort of like the last day of a trade show. You live close enough that you drive, so it if was me I would take Friday off. You could get there Thursday night or at the crack of dawn on Friday and see both Friday and Sunday races plus get more party time in. I would think that the drive out of Key West Sunday evening might not be as bad as Monday since the bulk of the visitors and boats seem to leave. I have no choice, it would be impossible to get back to MI if we stayed and watched a full day of racing, so Monday is just a wasted travel day.