Agree with the previous posters to ask yourself why you want off the floor and what you're looking for. I started in med-surg, went into float pool and pursued an ED position for about six months before one finally gave me a chance. Like you, OP, I 'wanted off the floor.....NOW', *laugh. Mostly: I wanted to be challenged, to advance my skills and learn new ones, to turn and burn patients and have some variety in my day. JME.
I cosign Stargazer 100%: every ED is different when it comes to staffing, teamwork, acuity, autonomy, etc, but I too would be concerned with a department with high turnover. The department which gave me my chance also was one of those 'challenged' units; I received less than two weeks orientation and was one of the only three nurses in *four* hiring cycles to stay through probation. The experienced ED nurses I met in my hiring cycle and the subsequent ones quit on their first or second shift. I should've bolted as well given this but didn't want to start over in the job search, still with no 'real' ED experience to offer. I stayed almost eight months and secured another position elsewhere, but the experience has been really rough. I'm not sure I would do it this way again, honestly - learn the right way with a supportive orientation because these patients NEED you to know what you're doing.
Regarding acuity and teamwork, specifically: my first department tied nurses' hands. You triaged at bedside, MD on your heels, and you had to literally stand there and wait for initial orders - IV, labs, diagnostics, etc. It was frustrating as all get out but it was the department's protocol. One of the day MDs would write all his orders and you basically could not touch that patient until he was finished; one of the night MDs expected you 'to do the important things', (sometimes without orders), and would be upset if you didn't start that line or draw a certain lab. Total miscommunication and total mess. My new job: mostly order sets that can be nurse-initiated, thank God.
Biggest thing that I've noticed different than the floor: teamwork. On the floor, we all had our assignments and when we could help each other, we did, but mostly it was every man for themselves. In the ED, I can't tell you how many times we grab labs for one another, transport a patient up, call a report and so on - it's like we all share the load so no one gets buried. It was very welcome but hard to adjust to - at first, I wondered if they were helping me because I was too slow or 'not getting it'.
Personality types: I've met so many different types of nurses, so not sure there is any one type. As a previous poster said - you can be any type of nurse but you have to be able to 1/ move and 2/ be assertive when necessary. Things change very quickly and there have been a couple instances that I never saw coming - like the walky-talky fast track patient with the visitor who all of a sudden dropped to the floor. @&^@^!%% There really is no routine and getting used to things changing all the time - taking over patients for others who are swamped, having patients elope, being forever interrupted and having to quickly change priority while dealing with the inevitable complaints those changing priorities create...THAT is what I had to adjust to. Oh - and knowing nothing other than '45, male, c/o stomach pain x 2 days' when trying to set that patient up, assess him and get moving while managing my others with the doc on my heels already asking 'what's this guy's story?'.
For me? Totally worth it. For you? You'll have to try it on for size. Good luck!