On average, a cocktail can run anywhere from $15 toR$25 or more. If you prefer wine or beer, a glass of wine will cost you aboutR$12 toR$22, while beer is typically aroundR$10. Of course, prices will vary based on what you order and where you happen to be.
That's why many casinos offer complimentary drinks in hopes of keeping customers within their establishments longer by reducing inhibitions due to alcohol consumption while they're playing table games or slot machines. Alcohol lowers inhibitions and reduces the likelihood of players leaving the game for a few minutes.