Food Safety Report: COSMO All You Can Eat World Buffet Restaurant | Wolverhampton, Wednesfield, Wolverhampton, UK 1 year ago • details 15 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills Suspected source: Ate at restaurant. Whole family ill Onset: 1 to 2 days Duration: other: Don't know. At least 24 hours so far Sick: More than 6