That mission is coming to fruition as del Lago has significantly boosted tourism in the region since its opening in February According to. Before the casino opened, average monthly traffic. Our test-market data is all within 10 or 15 percent of each other, so Until then, the opening of the casino will benefit area hotels. Slot machines will be taxed at 45 percent at Rivers; 39 percent at Montreign in the Catskills; and 37 percent at del Lago in the Finger Lakes. A Kentucky-based company acquired a Finger Lakes resort and casino as mobile sports betting brought in over $ billion across New York. --If parking and traffic are any measure of a casino's success, then opening day at the $ million del Lago Resort & Casino in Seneca County. The Waterloo Thruway exit has been busy since del Lago Resort & Casino opened in February. The del Lago acquisition comes as New York state considers accelerating the opening of up to three full service casinos in the New York City. . The casino's new 14,square-foot European-style hotel opening Saturday is called Spa del Lago. According to data from the New York State Thruway Authority, traffic at Exit 41 has increased nearly 50 percent since del Lago Resort & Casino. The del Lago Resort & Casino earned $ million in gross gaming revenue its first week.