Good point there’s really no need to do it daily, maybe that would even help non-walkers get their consecutive nights easierAs long as you modify it before the window opens for the next night you want, it will work.
So, say you book a 5 night stay and want to move it forward. As long as you do it before window opens for what would be night 6, you’ll be fine. Doing it 4 days I would work.
With a 7 day trip, night 6 is fine. With the online system it is certainly easy to modify daily, but it’s not necessary.