I've had a few rough ones but we just debarked the Carnival Miracle in Long Beach on 1/6 and it couldn't have been faster. I never came to a complete stop at all during debarkation. They would "ding" people off the ship almost in stride. I guess technically I stopped to scan my face at customs, didn't even have to get my passport out. That took, maybe, 15 seconds, otherwise it went as quick as you could walk. Perfect coordination all the way around.