I don't know of any Champagne brunch type experiences on site, but in 2002 we spent the day at MGM and had a lovely THanksgiving dinner mid day at the Brown Derby. Most of the 11 of us had the Turkey and stuffing special they featured. Maybe it was knowing we didn't have to cook or clean up, but all thought it was one of the most delicious Thanksgiving dinners we've had. The price was reasonable and the service was excellent. I know they had both lunchtime and dinnertime sittings.