[Cadaverous Pallor]

I'd say that I see it as fantasy world improv. Make it up as you go along but stay in character.

The "character" would be "the nicest store clerk you've ever met." The scenario is one much like that Twilight Zone episode involving the town of Willoughby (sp?) which is a romanticized version of an old man's past. Everyone is cordial and things are simple. There is no "backstory" because the idea is that things are not that complicated - everyone is a smiling and helpful, and that's all they need to be in this hyper-reality.