I think part of it is just the pacing and timing of things at the parties that make people less likely to slow down and go into the designated places offering food. Between running around getting free cookies or trick or treating, watching the parade and fireworks, etc., I know we have had a couple of parties where we were just having fun running around to do everything, didn't make a point to stop at one of the designated locations for food, and then arrived back at the resort starving with no food options open at the hotel. We've learned our lesson now but I do think depending on how you do the parties it somehow feels like you have to stop and seek out "real food" more than on a regular park day.