Are the dreams you have (or if you don't have any) related to type?
I (INTP) think I always dream the same as my daydreams X 1000. If I think too much about Star Trek during the day then I will probably envision some kind of sci-fi scenario in my dreams that night. And those dreams can be very solid and plot-driven, like a movie. But I can dream about a lot of things, and sometimes they concern my real life and not fantasy worlds. Some of them are wish-fulfillment fantasies, while others revolve around anxious thoughts.
My ISFP wife says that she doesn't dream. But then she reports to me a dream that was extremely anxiety-laden, so that suggests to me that she only remembers the powerful ones. And those always revolve around relationship issues.