My last few cruises the Carnival staff will direct you to your muster station right away so you can get that out of way. At the muster station, they will scan your sign and sail card for proof you attended, you sit and watch a 2 minute review of how to put on your life jacket and then you are on your way. Simple and painless. If you miss it, they will announce your name over the PA system and have you report to your muster station. The ship will not sail until everyone has completed the drill.