Well, this would certainly piss me off if it happened to my family. But, really, what can you do?
Afterall, Disney can't be expected to compensate everyone who gets sick on a vacation that includes a trip to a Disney property. In this particular case, how can the family even prove that ALL they ate was Disney food - let alone that that was what caused their problems?
My husband once got food poisoning from a turkey dinner servered at a cafeteria at work. He called in sick, and was told that half the office was also off sick with the same thing. There was reall y no question about what happened. The health department was contacted by the company, and were onsite that day "investigating" the kitchen.
The point being...restaurant food poisoning can USUALLY be expected to affect a whole whack of people at the same time...and therefore, if people become suspiciously sick at Disney, the problem should be reported immediately so any indication of food poisoning can be highlighted. Maybe its already in these posts somewhere, but if it happens, it should be reported not only to Disney, but if possible, to some regional health authority.
I would be really disappointed in Disney if they ignored a clear outbreak, but in this case, I can see why they aren't compensating. I mean, what kind of precedent would that be setting? Should they be expected to compensate anyone who comes down with something that has some of the same symptoms as food poisoning