I just did the calculation for our family of 5 adults (2 of them children who are "Disney adults"), 1 child. Based on the ressies I'm planning to make, the choices I think my family is likely to make there, and 18% gratuity, ours came to $225 for 7 days. You might be able to extrapolate from that, but it's really going to depend where you're eating, how much you're spending there and how much you tip.