To preserve the legendary aura of the Casino de Monte-Carlo and its illustrious year history, we are keen to apply in our gaming rooms a dress code that. Here's the dress code from the Casino website: In the gaming rooms: sensible dress is required. There are actually two Monaco casinos. Answer 11 of Does anyone know what the after 2pm dress code is for men and women in the Monte Carlo Casino? All I can find on their site is "Correct attire .