I deciphered what's up with the red eyes. Luke put some programming in 3PO years ago, because he knew how everything would play out to this moment. 3PO red eyes is scene is the program kicking in, probably some recording of Luke telling them what to do next. 3PO is literally a holocron. It may have the information about Rey's heritage and backstory, as well as her real name. Seriously "Rey" is the dumbest name they could have thought of, so clearly she will have a new name when her real identity is revealed.