Is this facility appointment only?

Yes it is.

New Year Greetings to All ! "NO".....It is NOT just Appointments. If You reach any DPS Office before the beginning of the day/before they open their Offices, form a line and wait for Your turn. Kindly ensure You have All the required documents handy. If everything is there with You the concerned DPS Officer will Approach You & All in the line & check for the reason of Your visit to DPS. They also carry a Register/Appointments Diary which has an "Open/Walk-In Appointment" for "10-15 Applicants". I had a Great Experience with DPS Texas Team more than twice. They are Very Professional & Kind to serve You provided You fall in the list of the available Walk-In Applicants. I wish You Good Luck ! Thank You ! With Regards, -- ISMAIL ALI MOHAMMED