I have not seen them there but unless Disney is the seller, AP's are invalid for use by someone other than the original designated person, child or adult. What someone may be counting on is that often children don't finger scan well when they get the pass and Disney will just assume that is the case and allow a new one when you first show up with the pass and try to scan for entry but do not succeed. Nevertheless, AP's have the user's name on it and if they check for actual name, it will be caught.