This is typical of cruise lines (and Greek tankers) :-) They don't call them Love Boats for nothing....
Its never the complex that kills you its always the stupid stuff. I am not amazed at the superman attitude of the ships officers. Thank God no one was killed or injuried. While the engineering space is indeed large with systems like a Minimax and a CO2 dump systems I am amazed they took the risks they did take. Plainly just stupid...
Sounds like folk need to be put in hack and re-certified. And I wonder what the after action report really said and I wonder what the nationality of the crew was? Yeah I hate to say it but it does make a difference in many cases.
I also wonder what the "guests" had to say? I am sure they finally were told...after they reached port....I hope....
If it was me... The Chief Engineer would be shot the Safety officer replaced and the Staff Captain demoted to "brooms"....