Hi, thanks for all the information so far. I also live in Houston and there are no appointments available for the Downtown location or the IAH Terminal E location that does NOT require a boarding pass, on the website I get the message "Currently there are no available appointments at this enrollment center. Please check later for openings or choose another enrollment center." I have been informed I need to make an appointment within 30 days but the only location available in Houston requires a boarding pass and I am not planning to fly out of IAH anytime soon.

Does anyone have any experiences with walk-ins at the downtown location or the IAH location that does not need a boarding pass? For now I guess I will keep checking the website everyday to see if appointments become available.

Thank you!