I think word-of-mouth marketing is critical in the casino industry. Casinos, just like any other business, rely heavily on customer loyalty and repeat business. Positive word-of-mouth marketing from satisfied customers can greatly increase a casino's reputation and attract new customers. On the other hand, negative word-of-mouth marketing can damage a casino's image and lead to a decline in revenue. Therefore, it is essential for casinos to provide excellent customer service and ensure that their customers have a positive experience so that they can spread positive reviews and recommendations to others.