Have cruise on various ships in their first few weeks. From Princess in 1990 to 3 Celebrity ships, there were lots of issues that were sorted over time.
Not worth flogging the shortcomings as over a few months the green crews and officers learned to work together as a team.
I note that cruising today is different as labor changes have made hiring experience workers worldwide difficult. On board probably a year to get new workers really sharp and probably a third leave before or at the end of their first contract. That and things like attendants that used to have 8 cabins, then 10, then 12 and now ???; makes for a "new experience ".