Better to be safe. Side note: for our cruise on Breakaway two weeks ago Tortola was replaced with a day at sea, due to "customer feedback, environment concerns, etc". You have what our exact cruise was supposed to be. I guess Tortola's better now?? They really didn't have to lie. I would rather have rerouted due to weather than a lie.
I know it's not what you booked; hope you have a great cruise anyway. Don't miss Syd Normans!