As a story, the Kidult should be surprising – and not everywhere. It should look like a sophisticated luxury hotel 80%, then 20% complete wild shock factor. It must be extremely contrasting to gain maximum effect! – look to Moschino hotel as an example. It reflects a luxury hotel, then laced with these crazy shocking ideas.
I think we should look to tell the concept story through the eyes of a figure. The concept story should follow his/her memories and quirky personality. Sophisticated on the outside, with a streak of crazy!.. remember 80% VS 20%