Just spotted this on their website (click under Tropical Update on their main page). There's a form they are offering to send you/contact you with any updates on your cruise with regards to departure port or boarding times. Not sure how effective it this, but something to check out.
Name, Reservation #, Ship, Sail Date & primary phone number. Also offers secondary phone number.
Thanks for the info. Yes, I'll probably sign up for it. We're sailing on Sept 24th on the Mariner, and there's always a chance of a storm. The more updated info we have, the better. As long as I can safely get aboard, I'm not concerned. I know RCCL won't compromise safety.