We toured this resort before deciding to stay, and even from the farthest rooms we didn't feel the walk was that far.
After reading postings on this board, I had become concerned about the same issue at CBR before we stayed there last year. Once we got there, we found that even the farthest walk, from Trinidad South, wasn't that bad.
Pushing a stroller, carrying a child, or a walking disability, could make it more of a challenge. But for a family such as ours that is reasonably active, and the kids are old enough to walk, it wasn't an issue at CBR, and the distance seemed even closer at POR.
One evening we had to make the walk in the pouring rain and it was unpleasant, however, still a manageable walk from any part of the resort.