Toshi was a popular restaurant located in the Grand Millennium Dubai hotel. Please note that information about specific restaurants and their offerings can change, so it's a good idea to check the latest updates or contact the hotel directly for the most accurate and current information.

If Toshi at the Grand Millennium Dubai still offers an All-You-Can-Eat Buffet, you can inquire about their buffet options, timings, and prices by visiting the hotel's official website, contacting their customer service, or checking online review platforms for recent information from visitors.