This are some concept renders of the dining area of a small casino. You can see they are concept renders as there is a table embedded to a column and things like that!
However, as concept renders they were quite successfull, the client liked them a lot, and almost nothing was changed from the original concept.
Revit+Shade+some modified sketchup furniture+fluidray 1.1.3
For being interior renders with dimly lit parts, render times were quite acceptable…
This is with the bidirectional integrator. I did not really use it for faster render times, but rather I was experimenting and the bidirectional integrator let me preview faster the effect of the lighting I am using.
Which, come to think of it, was due to being faster