Resorts World Sentosa Casino: Dress Code - See traveler reviews, candid photos, and great deals for Singapore, Singapore, at Tripadvisor. The place brims with activity hour a day, 7 days a week and is. Resorts World™ Sentosa is unrivalled in its intimate knowledge of Asian gaming preferences. "Guests must observe the smart dress code upon entering the Casino. . Guests wearing singlets, shorts, slippers, hat, caps, helmets, sunglasses, masks, veils or. resorts world manila casino dress code.