The long-term bad news is
An Institute of Medicine (IOM) report concluded that there was strong evidence that television advertising influences the short-term eating habits of children age 2 to 11, and moderate evidence that advertising influences their usual dietary intake, according to background information in the article.
Kids prefer what they've seen on TV, and they prefer what they're used to. Kids used to Tang don't like orange juice. I guess you just have to be vigilant. And you have to support things like nutrition requirements in Title 22 centers.