Congrats on 21 days, Humble. I had several similar dreams during my first several months of sobriety. I'm at almost 9 months now, and I couldn't tell you the last time I had such a dream. So they apparently subside. Early in my sobriety, I spent many waking hours considering and analyzing my drinking and devotion to sobriety. Go figure that when you're thinking about drinking all day, your brain holds onto that theme at night. Now that sobriety has become more and more a lifestyle, I really don't think about it as much (some around here might call it taking for granted). Perhaps that's why it invades my dreams less frequently. I take that as a positive. Unfortunately, given my New Year's Resolution to lose weight, it's Lindt's chocolates invading my dreams these days...
Also, about to spend two nights in Vegas on business. First time in Vegas sober, but I'm prepared -- mentally and physically.