With all these reports lately it's easy to write off all Red Sea liveaboards as safety risks but both I've been on have had muster drills on the first day where you grab your life jacket out of the cabin (or from the alternate stash on the fly deck) and meet at the evacuation point. Let's not use a broad brush to paint the entire destination with the failings of a few risky operations.
Yes, full safety briefing and walkthrough from cabins to exit at bow on Grand Sea Serpent last year. Life jackets in cabins. Couldn't fault the approach to safety on the boat. That said, if I ever do another liveaboard trip anywhere in the world, I'll be booking an above deck cabin.