When someone with the full version hosts a game joined by someone with the demo version, from the demo player's view, the court is blue-green cement, regardless of what was hosted, but the full version player sees the court that was hosted.
How does this affect the game? Since the rebound and so on are different for each surface, how does this balance? Is it just that the demo player only sees blue-green cement but is actually playing on the hosted surface? It was neat in TE2006 that a demo player could play on whatever surface was hosted.