For the freshmen five dorms (Cary, Crockett, Hall, Nason, and Bray), the beds will not be lofted. You can have them lofted if you choose, and can find the form to fill out on the ResLife website. As for Barton, all rooms are triples. One bed will be lofted, while the other two beds will be setup in a bunk bed style.
As for orientation, you will get a key to stay in a dorm for the night. You will most likely also have a roommate, so your parents will need to make arrangements to stay in a hotel.