Adult ICU RN --> NICU RN

Hi everyone, I have been an adult ICU nurse now for 3 years and started in this position as a new graduate. I have recently been wanting to make a move and explore other specialties / learn new things. I have always had a HUGE interest in Labor & Delivery / Women's health but am finding it impossible to get a position (that doesn't have me committing to nights for 2 years in the worst staffing conditions). That being said I was offered an interview through a Nurse Manager I know for a NICU position, full time days. The nurse manager has told me she currently doesn't have anything open for L & D but asked if I would be interested in this position. Of course I said yes, however I have never even thought of becoming a NICU nurse. I have a son of my own so am not unfamiliar to babies. This offer has truly started to peak my interest about the specialty area. I have done some research on what the position entails, asked around to other NICU nurses and everyone seems very happy. I wanted to see if anyone could offer some advice on how I could further educate myself/prepare myself for this interview? What are the current pressing issues within the NICU areas? Are there any other courses/certifications I could take to further myself and be better prepared for the position? I am nervous but excited to learn something new. How do you all feel about your NICU positions and are you happy??