According to WDWMagic.com, starting March 23rd guests under the age of 14 will need to be accompanied by a guest age 14 or older to visit all gated attractions including all both parks at the Disneyland Resort, all four major parks at Walt Disney World, both water parks and DisneyQuest. Prior to this change, guests under the age of 7 needed to be accompanied by a guest over the age of 14.