@Vader Was Framed: I can't say that I know a whole lot about the process, despite all I've tried to do to get information on it. I contacted my POI back in November and expressed interest in his lab group, which led to an informal phone call and an invitation to visit the campus and his lab. He is the one who told me that FES doesn't do formal interviews. I did take a trip out there for 3 days in December and had a good time mingling with others in the department and speaking to my POI and his students. Overall, it was very amicable and enjoyable. I don't know if my visiting is something that will bring favorable opinions during the admissions process, but I'm hoping it does. I don't know all that much about the process, but I'm definitely keeping my fingers crossed and hoping for the best.
Good luck to you too! Let me know if you have any more questions, since TGC is a great distraction from this whole thing.