I work days in a hospital. I work both in a step down unit, and float to an ICU. They are very different. The step down we get report, do vitals, ask the nurses which patients are showers and which are baths, plan those and give them, change linens, do blood sugars, I&O's every two hours, answer call lights, take care of charts, etc. It is very, very, very busy :) In ICU the patients are bathed at night. But we do hourly I&O's, and many of the patients have hourly blood sugars, or q2. The call lights are less frequent in ICU, but you are still very busy.
Excellent experience for nursing school. I love it!