Men shouldn’t be overdressed either, unless you’re going to a Scandinavian casino or planning to visit the Monte Carlo Casino - where people tend to dress more formally in comparison with other countries in Western Europe. Let’s take a closer look at what casinos consider stylish and neat by coming up with the dress code for both men and women… and very important: what not to wear to a casino! What to wear to a casino: men To emphasise the casino experience, most venues have established their own dress codes, but the basic rules of these dress codes are quite uniform: dress stylish and neat. As most casinos say: a night out at the casino is a unique experience in a rather exceptional ambiance.