I just moved my living room furniture around, got rid of my area rug and shampooed my carpet. I moved things around a few months ago. I don't do it at any particular time just when I have the time and energy to do it.
My living room layout is so limited, too many doors you could block, cable location, fireplace, etc. There's really only one way it can go. My bedroom stays like it is because the furniture is too freaking heavy to move! We inherited dh's grandmothers furniture which, being from a wealthy old woman, is heavy, formal, dark and old. Not easy to move. My dd moves her room around almost weekly LOL. Her dresser is about to fall apart from being drug around so much!