OK, you had a bad cruise. Maybe it was the cruise from hell. Maybe the service was good, but the food was bad. You can't wait to get home and tell everyone about your experience. Here is what not to do.....
DO NOT CONDEMN AN ENTIRE CRUISE LINE BECAUSE YOU HAD A BAD EXPERIENCE ON ONE PARTICULAR SHIP ON ONE PARTICULAR WEEK !!!!!!!!!!!!!!!!!
Please just describe why your experience was less than stellar. Was it the food, the service, the constant up selling ? If someone up chucks in one of the hot tubs, don't complain that it took 1/2 a day to clean it. There are protocols for sterilizing surfaces.
You are reviewing one week, on one ship. If I have a bad experience on the Norwegian Dawn, I don't come on here screaming that NCL is the worst cruise line ever. I'll write what was good about the cruise, and what I felt needed some managerial attention.
DONT BLAME THE CRUISE LINE FOR INCLEMENT WEATHER, OR A BAD EXCURSION.
The excursions are private contractors. If a cruise line receives enough complaints, they will stop offering those excursion options. As far as the weather goes, maybe you should have done some research and not booked that lovely Caribbean cruise during hurricane season. It the weather. It's out of the industries control. And don't say there was nothing to do. If you can't find something to do on a ship, that's on you.
Remember, a cruise ship is a floating hotel. Cabins are occupied 24/7/365. You only call it home for 1 week.