The Casino Copenhagen has American roulette, blackjack, poker, and slot machines. You must be 18 years old to enter, and there's a strictly enforced dress code—jackets are required, and no athletic clothing is allowed. Outerwear must be left at the coat check, for a fee. Dealers and croupiers aren't shy about reminding winners that a tip of a certain percentage is customary. The casino is open daily 2 pm to 4 am, and admission is DKr 90.