Here's the Patter from a sea day on our transatlantic cruise in 2019. There were lots of activities. They offered the pop choir, pennywhistle lessons, trivias, a book club, lectures, and a wide variety of other activities. I enjoyed having the teen center open occasionally to play skeeball. There weren't many teens on that cruise.
Someone on our Cruise Critic roll call organized a separate book club. We read Where the Crawdads Sing and Dan Brown's Origin. The a large part of the plot of the latter book takes place in Bilbao, one of the ports on the cruise.