Emergency Department Quirks

Waiting a long time is a good thing...it means they don't think you are imminently going to die!
But if the nurse, the paramedic, the radiology tech and the doctor all descend on you in the first 5 minutes, that's bad...or it could just mean they are bored...either way.

If you hear a lot of laughter from the nurses or doctors area, it may not mean they are having a great shift, it may mean that it has been a rough day.

Being boring is a good thing...it means they have seen this before and it's not dangerous.
But if they bring in a bunch of students to look because you are "interesting", that may be bad.

Just because everything sounds quiet, doesn't mean the ER isn't busy.  And just because you hear multiple people screaming, doesn't mean that anyone is dying.  Often, screaming means they are hale and healthy and likely to live longer than you...along with the imaginary things they see and hear.