Ameristar Casinos generally promotes a casual and inviting atmosphere for its guests, but there may be specific dress codes that vary by location and the type of establishment within the casino. Typically, the gaming floor allows for comfortable attire, such as casual clothing and footwear. However, for dining experiences at more upscale restaurants within Ameristar properties, guests may be encouraged to wear smarter attire, such as collared shirts and dress shoes for men, while women may want to consider dresses or nice tops with slacks or skirts. It is important to check the specific dress code policies for each restaurant or entertainment venue within Ameristar Casinos, which may be outlined on their official website. For the most accurate and detailed information regarding dress codes, referring to the current web page is advisable.