However, you should not commit a mistake of asking other players in the game about because that will certainly make others make situation to get out cash from your pocket.
If you're having a 20's style party be sure the dealers are also wearing a dress-up costume from that year. https://taigamepc.com/giai-tri/game-bai-rikvip-trai-nghiem-va-cam-nhan-cua-mot-game-thu-lau-nam/29