I was just looking at the final Cruise Compass for our Freedom cruise this past June. It has 6:30am listed as the express departure time. It doesn't specifically say that you HAVE to leave at that time but they do prefer it. If you wait until the regular debarkation has commenced you will negate much of the benefits of leaving early since a big logjam can form at Customs these days. If I were to use express debarkation, I'd be ready to hit the exit as soon as the ship was cleared and not wait.