Dh won 2 one day passes to US/IOA back in 2006 when he did the fear factor attraction they used to have. We are planning on heading there for one day on our anniversary trip, and we're finally planning on using these tickets. We mostly want to do IOA, but we want to check out the Simpson's ride. Are we able to upgrade them to 2 park passes? I know Disney promo passes are not upgradeable, so I wasn't sure if it was the same there.