The Muster Drill is basically an adult cruiser version of the elementary school fire drill — passengers and crew practice the steps they would take in an emergency situation. The International Convention for the Safety of Life at Sea requires the Muster Drill to happen within 24 hours of departure.
Having gone through covid, muster drills have changed. Each cruise line is different, but you will have some sort of ‘safety briefing’ prior to sailing…. it could be a video you watch prior to boarding or one you watch once you are in your stateroom, but DO expect some kind of information on ‘what to do’ if there is an emergency. At some point, you will still need to ‘check in’ with a safety officer onboard to verify that you HAVE watched the safety video.
On your key card, as well as in your cabin, you will find instructions on where your Muster Station is onboard. Signs will be posted all over the ship directing you to the various Muster Stations. Safety is always the cruise line’s priority.