I accidently left my lights on all day while I was at work (so including my commute about 11 hours total), but my battery WASN'T dead. In fact, I did not notice until I returned home. Although I was angry at myself I guess I got lucky. Should I expect any repercussions, however? Thanks. Slightly worried...
The headlights will automatically go off when you shut down the car and open the driver's door. Then they will come back on when you restart. So, it sounds like that is what you did. BTW, if you leave the switch on and don't open the driver's door, you're screwed.