Given the options for making mood higher in the future, it does seem a bit powerful but the odds of waking with that good effect are going to be based on Advanced Tech level and not a guaranteed outcome. You can wake up with low energy if you're unlucky. While you do get it at level 7, I don't think you'll get this very often until you've got the Digital Dreamer Skill Challenge completed, which is easy but time consuming with frequent use of the Dream Pod. You'll need to use a variety of different dreams so that you can come up with the big number of different outcomes you need. There are 3 possible outcomes per dream as stated in the AT Skill Guide.
The dream pod selection for good dreams is
always up or right, there's no luck involved at all. Any of those will do. Influence the dream, select the up outcome a couple of times until the snores turn green and wake up, lather, rinse repeat. The sim won't even stand up if you don't command them to, so it is very practical for a sequence.
With a high enough advanced tech your sim will *always* wake up squeaky clean, fed, with the social meter full, lucky, and with full energy. I just couldn't find a way to fill the fun meter yet. Pause the game and you get those results in a couple of sim hours.