I also remember a sailing where groups of parents with young children and young teens sat all their children together on one table ( around 15 ) whilst they enjoyed children free dinner a few tables away from them. They sat dining at leisure laughing and drinking whilst other diners couldn’t even hear themselves speak to the person sitting next to them if they happened to be seated next to that huge table of kids!
The children got bored, so began running up and down the dining room. Then in and out of the dining room. Then outside the dining room, and banging on the windows of the dining room.
The parents did nothing. They weren’t even watching them. You could see the frustration of their servers, and the sheer annoyance of the surrounding guests.
My friend and I asked to be moved and luckily there was space available. It was also not a full sailing so
DCL accommodated others by setting up other tables that hadn’t been utilised so eventually that table was more or less on its own!