What I'm calculating is that you would save $84.58 for each adult annual pass that you used this deal on. You would pay $431.95 on
UT for each adult ticket. When they go to upgrade it (assuming they hit the right buttons to count it as a 7 day ticket, which is worth $516.53)--you would have to pay an additional $78.81. Since the annual gold pass is $595.34, I subtracted the cost of the UT ticket & the upgrade to come up with the savings. People are more than welcome to check my math, though. I personally have never done an upgrade, but I read about people on here doing it all the time with success. Good luck!