@"daffodil potts" I think the great hall is the best place as aren't the green houses full of plants and stuff? Would want it for all students more like the harvest festival but with costumes encouraged having it only for the newts seems mean haha.

Bernadette Delacour Madame Delacour would be excellent as a chaperone. She is probably the teacher Violetta wants to impress the most as an etiquette professor and beauxbatons alumni. And prefects to keep the decorum would be a good idea.