Zeppers- Blackjack Friday's are just a way to get your ranks up on DXD.
greatertater- The tavern games are simply to mimic the life of a pirate.
For those that know how to play, it is a great way to earn gold.
If it does cause a problem for someone to get into gambling, they should just play POTCO.
But it should not be a necessity, especially considering all the other problems POTCO has to deal with now.