A casino is a place where people gamble and it can also be a theater, restaurant or bar. Some casinos add a lot of luxury, including famous acts to attract people and lavish rooms and entertainment, but even less luxurious places that just offer gambling would still technically be called a casino.
A good casino will be constantly monitoring its patrons for signs of cheating and theft. On the casino floor, you will see little black domes on the ceiling that hide cameras. Each table has its own supervisor who watches the players and can spot any suspicious behavior. Dealers are watched as well, and the count room (where all the money is collected) is also monitored by cameras and microphones.
Casinos have to balance their gambling, food and entertainment concerns 24 hours a day. They often pay big name acts to play and will also hire lesser known artists to perform in the lounges and bars. They also have to keep up with food and beverage issues and often provide alcoholic drinks for their patrons at no charge.
In addition to these features, a casino is constantly analyzing customer data and adjusting its operations. For example, they will comp players who are spending a lot of money at the casino. This is a way to reward players for their loyalty and encourage them to continue gambling. In many cases, the comps will include free hotel rooms, meals and tickets to shows. Casinos know that if they do not give customers enough incentives to keep coming back, they will go out of business.