(1) The man who got wet came by car and was able use items he had to "dry off"; many people who come to casinos are "day trippers" who arrive by bus and have no extra clothing items with them.
(2) The article mentions that gamblers (sometimes) wear diapers, so they can stay at a slot machine longer. This "compulsive" trait is not only reseved to gamblers. A (former) astronaut was so intent on getting to her boyfriend (it may also have been her rival) that she wore diapers while driving so that she wouldn't have to stop. This was "headline" news a few months ago.