In my experience it can be a tough crowd to break into. It takes a long time to prove yourself to your peers and there are many pitfalls along the way. There is a lot of territorialism and sometimes outright jealousy. I have worked with nurses who get in a snit if they aren't always assigned the sickest kid in the unit and woe be it to the nurse who gets that assignment instead. If you can make it through that you'll be fine. It's very different than the ED and similar to any other ICU (I've done all three). For me, the best teamwork I experienced was the ED.