I dropped my rMBP off at the Genius Bar for a screen replacement covered by warranty, got it back less than 24 hours later. Certainly no complaints at all on the service side of things. One thing I found interesting, was that my rMBP, which I dropped off with a fully charged battery, was returned with a dead one. Not "You have 5% left so I'm going into sleep mode to prevent data loss" dead. More like "I have nothing left. Not enough to even play the startup chime" dead. I had to plug it in at the Apple Store just to turn it on and verify they fixed the screen issue, which they did. Once it started up, I saw my battery level was at 0%. Not complaining at all, more curious than anything. Anyone know what they might have done to run the battery down like that, especially for something as easy as a screen replacement that was unrelated to the battery?