Hi Christine,
As the mom of 6 1/2 year old boy, I understand your concern. The good news is, yes, there are a number of "Companion Restrooms" throughout the theme parks. There are companion restrooms located at all of the first aide stations. In addition at the Magic Kingdom, they are at the lower level of Cinderella's Royal Table, Mickey's Toontown Fair, next to Space Mountain, Pirates of the Caribbean and Splash Mountain. At Epcot, there is one at the east side of Spaceship Earth, opposite Test Track and near Norway opposite the Viking Ship. This isn't a complete listing, but if you are interested in seeing one, please click
HERE, and see "Restrooms." You can also visit
www.allears.net and search "companion restrooms" for a complete list of locations.
I hope your husband and daughter have a magical trip!