If it were ME, which of course it is not, I would take the chance on the flight on Saturday, versus waiting till Sunday. I would rather take the chance that something goes wrong on Saturday, and hope I can get it fixed, versus know for CERTAIN that I will have one less day on island. If you have the ability to check with where you're staying and see if they would still charge you for the night you didn't show, if it all goes to H*ll, that might influence my decision some, or not, probably. Of course my friend, you don't have terribly good luck with air travel.....