When I was on this trip several years ago, it ended in Amsterdam so I can't answer your question. However, I would encourage you to plan to be onboard for the meeting before dinner. That is when they introduce the crew, give a ship briefing and explain the safety procedures. Also, it is when the PDs do the daily "port talk" about what's planned for the next day.
There are a couple of other things to consider when making plans for arrival day. If there are any significant flight delays, you may have very little time and energy for sight-seeing. Also you may be surprised at how early it gets dark there at that time of year. If you really want to see some of Amsterdam on this trip, go at least two days early.