I was thinking that there couldn't have been a worse ship to have this happen to than a Costa ship. With the multitude of nationalities on board and the number of languages being spoken it just added to the confusion.
I know that just about every cruise ship and voyage has a number of people speaking different languages but when there is one primary language that the majority of people understand others can interpret and help calm the people who don't understand. Also, when the vast majority of people are doing what they are instructed to do then others can follow the crowd instead of "winging it".
Nothing is worse than not understanding someone in an emergency.