The Oasis of the Seas ' Casino Royale located on Deck 4 with Slots, Blackjack, Craps, Roulette, Three Card Poker, Caribbean Stud, & Texas Hold'em. The Oasis. Royal Caribbean Oasis of the Seas Casino Royale Photos: Browse over 92 pictures of the Casino Royale on board the Royal Caribbean Oasis of the Seas. I am planning a trip on the Oasis and was wondering if anyone has used the casino. Are there live dealers for black jack and poker or is the Oasis of the Seas Casino Voucher. Thread Tools Thread Tools Show Printable Version Email this Page. Railengr View Public Profile Find all posts by Railengr. Alrana Eris View Public Profile Find all posts by Alrana Eris. Cruise Critic reserves the right to remove any content in its sole discretion. Find Your Royal Caribbean Roll Call.