The only time I actually moved is when I kicked a table for real whilst kicking a corpse of the first guy you kill in the game! Oh and I tend to jog on the spot like an idiot when I run in the game, but believe me it really does add to the motion sense. It's hard to explain, but you have to play it to understand. My gf plays it sitting down though and it still works great, I just like to get the maximum I can out of stuff like this. But no, you don't need to wander anywhere, it doesn't work like that, you just lean and turn around a lot
It does help we have an L-shaped big settee that I use as my guide (as sometimes landing pad) though
We have the pro btw, I've not played it with a standard PS4. It's hard to recommend the VR by itself right now as anything other than a fancy purchase if you have spare cash, as the future is unclear. However, that being said, it does work brilliantly, even to the point my otherwise tight with money GF is letting me look seriously at getting an Occulus Rift or Vive this year.