Just make sure they do not put any advertising signs in the window and you should be OK.

Are these bay windows or is there something else about them that may have suggested to the inspector that they were designed to show something off?
Strictly speaking, the code definition does not restrict "show windows" to retail or other store operations. And some inspectors (and their AHJs) consider all of the windows of a fast food restaurant to be show windows because they put temporary signs in them for specials, etc. (Not that any of these ever require power, of course.)
There is at least some implication that it is intended to apply only to first floor windows that face a street or parking lot, but it is not explicit.