Yeah, I had the same issue as Big McGuire. When I first got my watch I noticed the screen was turning on all the time while sitting at my desk working. I've since turned off raise to wake and now my watch battery lasts 3-4 days sometimes.
I do find it kind of annoying that I have to tap the screen or buttons to wake it up to see a notification. I wish there was a setting that left raise to wake off, but lit up the screen whenever you got a notification. With raise to wake off it does light up when you get a phone call, but not notifications. Same thing with GPS directions, it vibrates to tell you that you need to make a turn, but doesn't light up the screen so you don't know which direction to turn unless you have your phone visible, or tap your watch to get the screen to turn on.