For anyone in the Southern Cal. area, at the ASC in Riverside, CA. I did a walk-in( 2 weeks before appointment), and they took me in without hesitation. They have fast and friendly service. I walked in with my Matricula and they didn't question it. The only down side was they seemed unsure of how to handle DACA noitices. The receptionist looked at my biometrics notice and was perplexed because it said "case type: I821D" and it also referenced my I-765, so they weren't unsure if I was taking biometrics for I-821D or I-765. I was taken to see the supervisor, twice, and overall they took my prints, pic, and signature. Hopefully all went well. I called the National hotline and after speaking to several representatives, some are more informed than others, I got some answers. They said that the biometrics are for employement authorization, they said the applicantions are inter-connected, that way if we get cleared it makes it easier to produce the EAD as soon as possible.