For our May trip, I bought my mom one of those buy 2 days get 1 day free base tickets (not a hopper) from Undercover Tourist. How much would it cost to upgrade that ticket to an Annual Pass (just a Power Pass, not Preferred). In other words what is that ticket's worth at the gate--will they give me credit for what the gate price would be for a 2 day or a 3 day ticket, or what I actually paid for it through Undercover Tourist? Also we wouldn't have any problem upgrading it to a Power Pass would we? I know Disney price bridges tickets, but not sure how Universal handles them.