I wonder if a concept like this would have a casino. A ship would be a great location for more escape rooms, too.
Because of the more adult target crowd, the themed bar experiences would probably be truly phenomenal -- one could do Dom's Garage, an Amity Pool Deck bar, something like the Burning Blade, an in-theme Jurassic Park bar with break-out "moments". This could let them dip into some of their less park-friendly brands like Mamma Mia! or even The Notebook. Shows could include Back to the Future, Wicked, and Pitch Perfect, for sure, or something like Sing!, or even something like an E.T. musical. Definitely a Dreamworks area for kids...
If a cruise is indeed created, I think having gaming rooms on board is almost a must. A cruise with a theme like the Universal parks could be a great way to relax and have fun on the water. By the way, if they decide to add gaming to cruise lines, it is worth considering the experience of a platform I read about, like
https://icasinoreviews.co.nz/captain-cook/, which offers favorable conditions for players with fast payouts and secure transactions. As for other entertainment, creating themed bars and escape rooms like in the parks could be a great idea, especially with an emphasis on brands like Jurassic Park or Fast & Furious. I wonder how they will be able to combine family and adult entertainment on one ship.