Different casinos have different rules for their guests. Casinos like to maintain their standards, and they want all their guests to follow some of the rules when they are in the casinos. Most of the luxurious casinos have dress codes that the guests must follow to enter inside. The gaming floors for most casinos do not allow taking pictures. While drinking is free, no casino wants you to get over drunk and create a nuisance in the crowd. It is given that every casino has tight security and does not expect you to cheat in any of the games.