I got my passport stamped yesterday.
Here is the list of documents.
1) Approval notice Origianal/Courtesy copy
2) 2 Passport size photos
3) All EAD and Advanced Parole documents.
4) You passport(offcourse)
5) I-94 card.(Most of the time, this is attached to your passport)
I had an InfoPass appointment for Dec 20th. Since an immigration office close by(I live in Bellevue, WA) accepts Walk-ins on Tuesdays; I decided to try my luck. I went there at 7:40AM. Weather was rain and windy. There were 6 more guys in line before me. Office opened @ 8:00AM. Since this is small office only one officer works here. My turn came @ 9:15. Went in, gave my approval notice. Officer took a look into it. Asked for passports, EAD, Advanced Paroles. Asked to write our name and A# behind photos. Took fingerprints and stamped the passport. whole process was done in 15 minutes. No questions asked. This walk-in helped me to get stamped earlier(6 days) than my actual appointment and I don't have to drive till Seattle. I came back and cancelled my InfoPass appointments.