I have those dreams, too, FreeOwl, and they can be unsettling. As alcoholics on recovery, we spend a considerable amount of time consciously growing in, and strengthening, our sobriety. It is no wonder that alcohol (and our worst fears - drinking and failure) creep into our subconscious and dream-state.
My take is that if we wake relieved that it was only a dream and that in our dreams we weren't living it up and enjoying our drunken ourselves, we are okay.