It seems to me that either everything has meaning or nothing does. I am going to opt for the first - that everything has meaning. The meaning is not inherent in the dream or fantasy, though, but rather in the designs of their origin; their origin, of course being us. If I review every day of my life, I can honestly say that on the surface, there is not nearly as much going on as I make it seem like there is.
I had a dream last night filled with anxiety about what gift to give a dear friend for her birthday. What did I want the gift to mean? What did the dream say about my intentions. As far as I know, no one but me is in here with these ideas. So, I would say I am giving a heck of a lot more meaning to things than maybe I might.
As far as fantasies, I once told a group of friends that my most cherished fantasy was to own a home on every great golf course in the world. The meaning of that is very clear to me. I just want to play golf and my dream and fantasy is to play it well.
Thanks for the opportunity to answer this question. This is a great question.