People want a plan.
They’ve decided they’re going to an unknown foreign country and they want to maximize their time. They want to see all of the sights — go to all the museums, monuments, and any other historically significant spots. They wake up early at a planned time and each subsequent hour until they go back to the hotel and pass out from exhaustion. So they can remember what they were too tired to appreciate at the time they took a lot of pictures. They wake up the next day and do it all over again, doing what every tourist has done for decades.