If you have a guide book have your freind read about the rides and pick the rides that he/she might like. Then pick the headliners and go to them first using fastpass even if it means criss-crossing the park. Then hit the rest of the rides whenever.
If I knew what rides this person might not want to miss I could give you a better answer.
Other advice. Get there early and ride as many of the headliners right away.