Meaning when the passengers had to abandon ship!!!
A Captain is not going to abandon ship because of the weather. Ships are abandoned when they are no longer seaworthy. Modern ships are more resilient than many think. As long as a ship is not in danger of sinking, or an out-of-control fire, nobody will be headed for the lifeboats. I doubt we have any members who've ever had to abandon ship. It is too rare an event.
Fire at sea is the worst nightmare for a crew. Worse than taking on water. I've been there in my Navy time. We were transiting from Norfolk to the Med for a deployment, about mid-way across the Atlantic, and one night an electrical fire broke out in an MG room (motor-generator) two decks below my berthing area. Electrical fires are bad when they get into cable trays and we thought this one had done so. So it was at 0200 hours that the Captain decided to man "Repair 5" which was the emergency station on the mess deck as a backup fire fighting force, while the main fire fighting force fought the fire. We set a modified Condition Zebra too, which established barriers. We actually came close to bringing the ship to Battle Stations since that is the most secure level of readiness. In the end, we got the fire out and secured. This was on the USS Texas (CGN-39) in 1981.
The only time I've been on board the lifeboats are when we're tendering into a port. If you're worried about having to abandon ship CruiseMstr, please don't. They didn't abandon ship when the Crown caught on fire. As all have said, it would have to be severe. They can close off sections of the ship to contain the fire. They have bilge pumps to get rid of water if they take water on. The crew has mandatory drills constantly for safety. The muster is very important to attend, no matter how many cruises you've been on. Relax and enjoy, you'll be fine.