I have cruised on the Sunshine a few times and we've parked there when we didn't have a ride to the port. I felt terrible for the passengers! I would have liked to know the day before, and maybe Carnival could give folks free internet to make car rental arrangements or let family members or jobs know. Living here, we'd gotten off a cruise, left, and went to work that day.
FWIW, it doesn't have to rain for it to flood in parts of Charleston. We have tidal flooding as well. But the storm last Sunday was very rare. We locals know the flood prone areas, but this is the first time in my memory that the parking lot at the terminal has flooded.