Just a side note, one of the things they teach you in safety classes is to teach your children (especially toddlers & preschoolers) that if they loose mommy &/or daddy to go find another mommy.
They do this because it is universal--wdw, mall, zoo, park, etc. Small children have a very difficult time telling the difference between a police officer, a security guard, a gas station attendent, or in a panic different name badges (cm v. guest of honor) at wdw. And not all places screen very well. A security guard at a mall may be a pedifile (sp?). And besides, even with places who do screen well, it is only after someone has been caught AND convicted does a flag ever show. Not to be morbid, but we all want our children as safe as possible. A mommy is usually a safe person. They will usually help a lost child & be more coherent than a terrified child. Plus it adds another line of defense and a witness. Bad people are usually looking for easy targets; a child who has already been "found" by someone else is not an easy target.