I really like the mini game it's got a lot of charisma and flesh out the characters!

Devs. already pointed out that if the Card game is not your thing you can continue your progress of the story as it is entirely optional.

The manual is on Yatch Club games website if you want to take a closer look to the game mechanics.

https://yachtclubgames.com/joustus-instruction-manual/

peace!