The casino is open all night, and sleeping in shouldn't be a problem guests rave about River Rock's plush bedding (though some do caution that the thin walls do not effectively block out disruptive nighttime noise). A 21,000-square-foot theater is also found on site, along with the Absolute Spa, which caters to serenity-seekers with a versatile selection of massages, facials and other body treatments. With multiple eateries and a lively lounge, guests rarely need to leave the premises. Complete with indoor waterfalls, the lobby at River Rock Casino Resort is the entry point to abundant amenities and buzzing nightlife.