For this particular cruise, all of the entertainment is done via THO (The Home Office) of JoCo. There are also shadow events run by other cruisers that make up the bulk of the activities. There's a game library for the duration of the cruise, if that's your thing.
Food wise, most of it is the same as any other cruise on that ship, but they will occasionally have a special dish. In 2018, they had a dessert that was like a Tide Pod. In 2022, there was a food made out of beets. I forget what the title of the dish was, but it was amusing. They also typically will have a specialty drink. Don't be shocked to hear "Wang Wang" quite frequently. It was the drink of 2020 and became the typical bar call.
Tons of history and inside jokes. Don't be afraid to ask anyone about something you don't understand. They will happily tell you about it.