I'm another of those who forms a mental picture of locations and characters in a book, but that's all. I just read, if I wanted to visualise a story, I'd watch a film?
I wonder if those of us who don't visualise action when reading are all rubbish at decorating?
I love how people can think of a colour, or browse furniture in a shop and visualise how it would make their living room look, but I just can't do it!