As a BGO and Area Coordinator, I recommend the following:
1. Show up on time.
2. Dress for success
3. Look the BGO in the eye.
4. Ask questions.
5. Talk about yourself. No one knows you better than you. Don't be shy, but don't be cocky either.
6. Tell the BGOs things that are not in your application package already.
7. If, for some reason, your parents are present, do NOT let them speak for you. If you are asked the question, YOU should answer it.
8. Know USNA before you get there. Be familiar with the web site. Very familiar.
Good luck!