Yes, you still have to check in at the terminal, but it doesn't take long. Even arriving at a peak time, I've never waited more than about 5 minutes to get to a check in CM. The line moves really fast. Once at a check in window, you turn in your completed health form, have your picture taken, have your passports (or other documentation) scanned, and get your KTTW cards. It only takes a few minutes.