Get one, and make your own photocopies for the fair. We don't have access to your transcripts at Career Services. The coursework page serves as an informal transcript. You'll see whether they're hiring interns, co-op, or both, and what majors they seek. Yes, if you have a good reason.
Some employers are very flexible about who they with speak with.
Just be ready. You are not obligated to accept an offer immediately. If you do accept an offer, you are bound to your word. You can't change your mind. So don't accept until you are sure.