I think primary advantage of lounges and bars to a casino is that they provide an atmosphere for socializing and relaxation outside of gambling. This allows patrons to take a break from gaming and enjoy drinks, food, and entertainment in a more relaxed environment. It also helps to attract non-gamblers to the casino, who may come for the amenities and end up trying their luck at the tables. Additionally, the revenue generated from food and drinks can supplement the income from gambling, making the casino more profitable.