For idiots saying things like 'Don't these people have anything better to do with their lives?' I know these guys and yes they do, they take shifts with one another when they have important things to take care of, as well as things like changing clothes, shower, university studies etc. Good planning is the key! Plus they took time off work for this, you can do that you know.
Also about the 4 guys in a tent thing, sounds weird haha I assure you they have more than one tent! They only did that for the photo.