Welcome to Koo Seafood Buffet & Grill @ Fort Rapids Indoor Waterpark Hotel & Conference Centerin Columbus, Ohio! We are Largest Buffet Style Restautrant In Ohio !! Open Daily for Lunch & Dinner inside Fort Rapids Indoor Waterpark Hotel, come and enjoy delicious Oyster, Crab Legs, Sushi, Steaks, Salads, Deserts and much more! OVER 100+ items to Choose from.