It depends on how much you're teaching. I liked to be well-prepared so the day of my classes I didn't work at the hospital but spent the morning going over my information, making any changes, and prepping for any activities I was going to do. Over 4 years, I ended up assigning more individual and projects that were clinically-based. I regularly had a midterm that was a mix of multiple choice, short answer, case studies, and one reflective piece, but the final was a project that offered certification training to take with them, practiced role playing, presented on a test, partner activities, etc.
Make sure you offer office hours after a class or around the student's schedule.
I had a collegial department with people I had known for sometime, and all were very supportive. Being an adjunct helps them. You may be asked to do other things, like mentor students, which can be fun if you have the time.
Don't take on more than 2 classes a semester - unless you don't have another job. I hear some adjuncts are being asked to teach 4 classes a semester. That would be very difficult.