I wouldn't worry about missing it, they didn't provide any information you can't find somewhere else. The most important things I got out of it are a big calendar with all the important dates on it, my SOCS membership (which you can get any time), more familiarity with the campus/commute/parking, and a headstart on my Mac memorabilia collection.
What I
would be concerned about is that you're not getting the emails, because I got an awful lot about the orientations. Not that they were important, but future emails might be. I'd check that Mac has your correct email. Make sure you forward your student account to something you'll actually check, too.