Orientation is a pretty cool experience. You show up and go into 120 EW (which is normally 2 classrooms), and they open it up into a big auditorium. Its the first chance you really get to meet everyone, and you get cookies (maybe I'm overexcited by that). Dean Garvey will give a breakdown of the class, including average GPA / LSAT from undergrad, and mention the cool things that people in your class have accomplished. This is always the interesting part - you figure out that you're going to school with Sushi Chefs, Olympic Athletes, Video Game Designers, etc.
If you haven't already figured out what section you are in, you will figure it out in the next week or two. At that point, there should be a list of your profs. The textbooks are listed by class in the bookstore, they don't send you a list. Most people get their books that first week at the book store, which is ULTRA expensive. I'd highly recommend going to the bookstore the first day, writing down the books, then overnighting them via half.com. I just emailed all my profs today asking what the text is so I can order them on half.com, but as I would wait.
Cross your fingers and hope you get into section 3
Again, I'll throw out my offer if you guys get to the city and want to hang out, let me know. I had some 2L's take care of me when I moved up and I told them I'd pay it forward.