My son is scheduled for an overnight visit next week. Any advice on what to wear/what to bring? We're wondering if khaki slacks and a short sleeve dress shirt is appropriate to wear to visit classes. Then we engaged in the "tie vs. no tie" debate. And after classes in the evening, does he need to have something more casual like shorts? I don't know what happens in the evening. Probably sounds like a dumb question but any feedback is most welcome!