We have been on 9 cruises and never once have they scan our cruise card or call out our names. Also two of our cruises we were not require to take our life vest, so we are also wondering how do they know. We have been on 3 back to back cruises and were only require to attend the muster drill the first day of the first cruise. On the second leg of our cruise we just walk around the ship while the new people went to the muster drill.
This is a great question????