The term "Virtual Tours" according to an online Encyclopedia - "A virtual tour (or virtual reality tour) is virtual reality simulation of an actually existing location. A virtual tour evokes the sense of observing or moving through the represented space."
Most realtor virtual tours are slide shows comprised of awful photographs.
As far as I am concerned, it is not a virtual tour unless it contains an interactive floorplan that they can virtually walk through. I shoot every single room (except utiltity) and show where I was standing when I shot. With out a floor plan, people virtually don't know anything about the house other than, if it is furnished, what the furniture looks like. Where is the family room, the kitchen etc. These questions should be answered in a true VT.
If the realtor is paying me, I will sketch out the floor plan. The plan has to fit in a specific size area on the skin so it won't be true to scale any way.
Here is a link to show you don't need a "to scale floor plan" to convey the idea.
If you are going to look at it, look at the instructional video to understand what I have done.
Sorry for the long epistle.