i'd like to note that you cannot actually develop a tolerance to alcohol. if you're a hardcore alcoholic (maybe the case for you!) you can condition your body to metabolize it slightly faster than normal people, but if you're a 0.100 your cognition is still just as impaired as anybody else's at a 0.100.
what you've done is gotten used to it, and learned to school your behaviors and reactions so that you've removed the more obvious signs of drunkenness. (for instance, you've probably learned to stand with your feet slightly further apart, so that you don't wobble or fall as much.)
so when you're home alone with your children and drunk, you're just as incompetent as any other drunk to care for them or get them emergency medical assistance if necessary.
what you've done is gotten used to it, and learned to school your behaviors and reactions so that you've removed the more obvious signs of drunkenness. (for instance, you've probably learned to stand with your feet slightly further apart, so that you don't wobble or fall as much.)
so when you're home alone with your children and drunk, you're just as incompetent as any other drunk to care for them or get them emergency medical assistance if necessary.