Pardon me, but I think a children's hospital would not have antidepressants, narcotics, or OxyContin-type drugs. These drugs are not given to children. The drugs it has are most likely antibiotics, milder painkillers such as Tylenol III, and the like. The junkies will be very disappointed if they get into that hospital. My guess is they really want to steal the equipment, computers, and TVs - stuff they can sell. Although I'm still trying to figure out who they think they can sell this stuff to.
Yes, a children's hospital has all the drugs any other hospital would have. Tylenol doesn't do much for broken bones or post surgical pain.
I was thinking about the drugs used for surgeries, which can be very strong. Or, if these folks aren't too smart, they just might think "drugs."
Or, maybe it's as simple as wanting something clean and dry and a place to lie down.
You could be right, though.