Hi Aaron,
The interview went well(took about 3 hours for the whole process) and the visa has been approved. It was similar to what others have already mentioned in the forum. You can go 5~10 mins before the appointment time to avoid current cold weather. They will let you in per the appointment time, even though later interviewees before you in the line.
Interviewer just asked and verified generic questions like;
1. Where I will be relocating?
2. What position I will be working?
3. How did I know about the position and employer?
4. Most of the time he was verifying the documents and entering data in the system...
If there is any specific questions, I would be happy to answer.