A good location might be to place one or two between the box spring and mattress on each side of the bed. A major disaster can happen anytime, day or night. You should have one of our recommended disaster kits there as well. Look at the statistics. It's kind of like flying.
Some people are afraid of flying , but statistically speaking - flying is the safest way to travel.
So let's make a reasonable level of general preparation, then we can go about our lives. In any major disaster people may be killed immediately. But many more will die in the confusion of the aftermath possibly due to occurrences such as fires. Disorganization, lack of communication, no water, screaming people trapped in building rubble will all add to this confusion. People will rush to the large parks, where the authorities said they should go.