None of the games I've played so far (most everything on the two demo disks, Batman, and Eve) required *you* to move around your room. Some, like Job Simulator, allows a little freedom of movement within a very small area, but nothing that I would consider real navigation. None of the games require you to stand, so you can certainly sit and play, though some of them work better if you do stand, simply so you have room to crouch.
As for moving a character, most of the games are stationary or on rails. If they do require you to move a character (outside of vehicles), you are mostly going to look at an area and press a button to teleport you there. There was only one game I played, Here They Lie, that has you using a controller to navigate like a non-VR FPS game. And that made me a little motion sick.