The dealer will supply two cards, one is faced up and the other one is faced lower.
If you're having a 20's style party be sure the dealers are also wearing a fancy dress from that year. However, there are a bunch good strategies, which will alter home edge and increase your odds of winning. https://gamein.wiki/nha-cai-rikvip-noi-thoa-man-dam-me-ca-cuoc-cua-ban/