Kuhio Beach Grill is a Waikiki, Honolulu, Hawaii restaurant offering daily breakfast buffets. In the evening, the oceanfront location at Waikiki Beach Marriott Resort & Spa features Modern American small plates with local ingredients, seven nights a week and a special dinner buffet Friday-Sunday.Kuhio Beach Grill is a Waikiki, Honolulu, Hawaii restaurant offering daily breakfast buffets. In the evening, the oceanfront location at Waikiki Beach Marriott Resort & Spa features Modern American small plates with local ingredients, seven nights a week and a special dinner buffet Friday-Sunday. .