In Las Vegas, the minimum age for gambling and alcohol consumption is 21, which is strictly enforced. Minors are not allowed to enter a casino, even if they are just passing through. Proof of age, such as a valid government-issued ID, is required for anyone wishing to gamble or purchase alcohol. It is important to know that underage gambling is illegal and can result in heavy fines and legal consequences. Therefore, visitors to Las Vegas should always carry identification to avoid problems.