Well if drinking messes up our sleep cycles, it would make sense that it would mess up our dream cycles too.
I rarely remember my dreams. But the last two days I've had 2 very vivid ones. One that I checked myself back in rehab. It was so real. And then I realized I hadn't relapsed and was trying to get them to discharge me and they wouldn't. last night I had one about my late husband. And those kind are very sad.
I don't put a lot of stock in dreams. They just are. They can be unsettling but I don't think we need to assign them any power.