Well when I read the first post last week, I was really sad, as I had purchased my annual pass only the day before, so didn't get the offer of buy one year get one free.
Anyway, I thought, this is America you are dealing with, great customer service and all that. So I got on the phone to Universal. I was advised to buy the new deal on line and then phone back with both pass numbers. They could then cancel my first pass, and refund my card. I would still have to pay $20 postage though.
I did this, and whoppee, when I phoned up, as promised, they refunded my credit card for the first pass. Not a problem at all. How fantastic is that. That wouldn't have happened here in the UK, it would have been tough luck.
So if anyone has an annual pass out there that hasn't been activated, get on the phone to universal and see if they will do the same for you.