I was trying to think of an opera that could be translated into Charlie and the chocolate factory, and I could only come up with Cosi fan Tutte. It would need to be an opera where a kind of master of ceremonies controls what everyone does, so that means Don Alfonso as Willie Wonka.
I guess Charlie would have to be Despina, and any chorus would be filled by the Oompa Loompas. The other characters would replace the children and their parents. They’re grown ups, they don’t need parents. No, on second thought, Despina has to be an Oompa Loompa.
The guys would hatch their plot in the media room. They would go off to war on the up and out elevator. The girls would take up residence in the main garden room with the chocolate waterfall and river. The guys in disguise would come in on a swan boat. Love scenes would be carried out on the various spots in the garden. Very suitable.
For Despina’s cure we would need the invention room. I’m not sure where we would put the trained squirrels. Fiordiligi should try to escape in the up and out elevator. They can all have chocolate while they’re waiting.