More like Lake of Psychedelic Hallucinations. Heh, I made a funny.
So I never knew about this attraction for years. It was only when I looked up "free show attractions" that this popped up. And with all the money that I lose in Vegas, I need all the free stuff I can get!
The automated light and sound show is located outside in the back of the Wynn casino. What normally is a small lake and waterfall transforms into a nightly show for patrons to see. Check the official website for specific times [http://www.wynnlasvegas.com/Shows/LakeOfDreams/Photos].
Let me set the scene though. It was raining that weekend, so the outside patio that makes the show sound worthwhile was closed to the public. The show went on still, but you couldn't listen to the music and get the full experience. My girlfriend and I just stood inside by the window by the bar though. And what we saw was weird...
I won't spoil the show though, but let's just say that maybe there is a reason why there's an alcoholic bar by the show area. The show isn't long at all either. Just a few minutes.
Based off the experience I had, I'd give it a 2. Maybe a 3 if the weather's nice (allowing you to actually sit in the patio and listen to the audio) and you're with the right company... and maybe a little intoxicated.