I arrived and hour earlier than my appointment letter said there was already 25 people before me some of them even had their interview at 9 am so the time doesnt really matter but the order you get there does. As soon as you get there security lets you in you go through security check you can keep your cellphone and turn it on when you are inside.
After you go in they will take your name and cross you out from a list they have and give you a number to get called for the first time. When they call you to the first window is to confirm your information. After that they will call you again by your name and the consul will then do the interview. They gave me paper that is an immigration fee you have to pay online before you travel. They will send me the package and the passport with the visa through DHL the one you chose. The people at the embassy were very nice and helpful. They do take a little long i was there for 4 1/2 hours but in general it was good.