Oh yes, must be clean shaven! When I arrived for the college program, I hadn't had time to shave yet, so they gave me a razor and shaving cream to shave with. There were, like, ten other guys in the restroom grumbling about having to shave their facial hair off. They apparently never payed attention to anything Disney told them up to that point (For as much as they tell you at the Info Sessions and in all the materials they send you before you go, I can't imagine how anyone wouldn't have known they couldn't have facial hair)