Re: One rule for you...
At the building I work in, alarm is armed as of 6pm on weekdays, and all weekend.
Card access to the building during normal hours, augmented by an additional code entry on a pinpad during the alarm hours.
The alarm auto-arms 60 minutes after being disarmed, and the 60 second spoken warning over the loudspeakers scared the crap out of me the first time I had to be in the office in the middle of the night.
Fortunately all you had to do was tap you card to any door reader.