We got to terminal 4 about 2 hours before our flight. It was a pretty simple process. The lines were short but started getting long right as we got there so be sure to give yourself plenty of time. The check in attendant at American Airlines was very helpful and assisted in checking the luggage size to make sure it was carry on size. All the security was helpful, they even joked with me. On the way to the gate, a golf cart guy was passing by and picked us up to head to the gate. Smooth sailing and the start to a great trip!