The cost for "as much as you want to eat" brunch is the same as the cost of the "prix fixe" dinner menu, from which diners can choose 1 of 2 appetizers, 1 of 2 salads, 1 of 4 entrees, and 1 of 2 desserts.
It is also possible to order individual items from the dinner menu and pay separately for each item. The full menu has options that aren't included in the prix fixe choices.
Someone using their Platinum
Castaway Club benefit will get an amount up to the prix fixe cost deducted from their dinner, as long as they have spent at least that amount (not including alcohol and gratuity).