I just did my walk-in today at the Chatsworth location and everything went smooth!!! I went in there around 3PM, it was really empty. The staffs there were really nice and friendly. The security just ask for my paper and didn't even ask why I'm here early(as my schedule appointment). I guess I was worrying too much. For those who also want to do a walk-in at this location: don't go there early because it would be pack! I went in there on Monday 8AM, it was pack of people. Afternoon would be better~~~