I've been sober a long time and still have the occasional dream. Actually they aren't dreams...they are nightmares. They happen when I am under a lot of stress.
I don't view them as an indication that I'm about to relapse; I think they are a PTSD-like thing, almost like a battle scar. And frankly I am never happier to be sober than when I wake up from one of those awful nightmares and realize that I didn't really drink.
OTT