It depends on the type of casino you're visiting. For a high-end, upscale casino, it's best to dress in formal attire such as a suit and tie for men and a cocktail dress for women.
For a casual casino, a nice pair of slacks and a collared shirt for men and a casual dress or slacks and blouse for women are appropriate.
Avoid wearing anything too revealing or casual, such as tank tops or flip-flops. It's always a good idea to check the casino's dress code before you go. In some cases you may need to wear a mask, so always check on that before too.
For a casual casino, a nice pair of slacks and a collared shirt for men and a casual dress or slacks and blouse for women are appropriate.
Avoid wearing anything too revealing or casual, such as tank tops or flip-flops. It's always a good idea to check the casino's dress code before you go. In some cases you may need to wear a mask, so always check on that before too.