I need to add my input on this part of your statement. There is not always more documentation than med surg, but in my ER there is still hourly rounding and expected patient updates like approximately what time the IN infusion stopped. There's tedious stuff you still have to document too... the psych patient who needs restraints, the patient refusing care. Heck, my ER just started mandating that we document whether an aspirin was chewed or swallowed.
We also don't get traumas all the time; some days its 5 or 6, other times we go days without any. We get a lot of abdominal pains, chest pains that are really indigestion or pulled muscles, headaches, pain seekers or unnecessary nursing home send outs. I really wish I had been more realistic about the types of things I would see before I decided to work in the ER.