Food Safety Report: The Buffet at Wynn Las Vegas, South Las Vegas Boulevard, Las Vegas, NV, USA 1 year ago • details 106 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: buffet Onset: 12 to 24 hours Duration: Several days Sick: 2 people