I've only had one of those "real" dreams. I wrote about it somewhere here on SR. It was early on in my sobriety. I do remember the realness. I was scared, but after getting myself fully awake, I could appreciate the blessing the dream was... plus folks here supplied some feedback that was so helpful.
I am glad I haven't had another. The fear in the dream and immediately after waking was intense. But, it was a good dream in the sense it reinforced my commitment.