We have as well...twice. Both in the middle of the night, both for small fires. Both situations were very short lived...less than 20 minutes.
How did it go? Well, in one case, I looked out the door of our cabin, to see pax running down the hall, some with life jackets on, some carrying their life jacket, even though no order to report to muster stations had been given. So, while in the big picture, we followed the directions, at least some people did not.
Having worked in emergency services for almost 40 years, this didn't surprise us. People don't behave logically nor follow directions in emergencies.