Yes, you can go to a casino at 18 in some countries, as the legal gambling age varies worldwide. However, many places require visitors to be at least 21 to enter a casino. It is essential to check the specific age restrictions and regulations in the region you plan to visit. Some casinos may have different age requirements for gambling on the gaming floor versus entering other areas of the establishment. Always carry valid identification to prove your age if you intend to visit a casino.