Hi!
I just wanted to let you know I have suffered from the same thing ALL my life. No drinking involved

I would wake up, be paralyzed, yet I could see and hear everything around me. However, sometimes I would drift back into sleep and start dreaming, even though I could hear and see what was going on. I could write 100's of different situations that occured during this. Some of the FREAKY! Some AMAZING! Anyways, I would have to concentrate really hard in order to not fall back asleep and concentrate on wiggling a finger until I could move my hand, then move my arm, then get up. I found an easier method, I start chattering my teeth. It wakes my spouse up and he knows to roll me over now. I also can't speak when this happens. Actually I prefer the word SCREAM as thats what I wish I was doing. lol. That's the short of the long.
Now, to let you know whats happening. I hope to explain this right. It's called sleep paralysis. The titles fitting isn't it?

What happens is, when you sleep, your body sends out these chemicals so that you don't act out in your sleep. Ie you dream you are Bruce Lee and are chopping away at the bad Ninja guys. Well this chemical stuff kind of paralyzes you so you don't beat the snots out of your loving significant other, or pet, or pilllow. HOWEVER, with some people our minds wake up just a little to early before that paralyzing serum lol has left or gone to where ever it goes. So we wake up but are paralyzed until the stuff goes away.
I hope this helps. There's a lot I didn't add, but please ask away. I was haunted for YEARS with this. I ended up sleeping with the lights on for 2 of those years as I was having awake/sleep hallucinations. I was partially mind awake but my physical was sleeping or vice versa.
Truffles