I'm very rarely up past 10 or 10:30. There are nights I get home from work and am literally up just long enough to set the alarm and change clothes. I walk in the door, say hello, and head straight upstairs for the bedroom. I think my schedule is why I like very strong coffee. I need it. But, therefore, I probably wouldn't still be there at 6:20, so a fire alarm then would have no effect on me. If it was at 3:20, then I'd be annoyed, but would probably go back to the room and get ready to go, and go kill time at an all-night diner or something, because once I'm awake, it's better for me if I stay awake.