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