Anyone who has ever been on a cruise ship knows that cruise ships wait for absolutely no one. Actually, no public transportation ever waits for their passengers. If you are not there before the departure time, they will depart without you, and you will have to figure out another way to get to your destination. This is a lesson that the parents in this Reddit story had to learn the hard way, and it's honestly crazy that full-grown adults have not figured it out before. What's even more crazy, is…