I have volunteered as a prison teacher. My job was to teach prisoners in a school. That is totally another world and you will be surprised how they survive in such conditions.  In this prison, everything, including drug use, gambling, prostitution, cultism, and others, exists. I have never seen people gambling since I am not allowed to visit their cells, but I have firsthand information that they gamble with money, food items, clothing, bed space, and anything that has value. You can gamble with a comfortable sleeping space and sleep on the floor if you lose. I might not be surprised that gambling exists in the afterlife  .