You can get a three-day ticket credit for the price of a two-day ticket credit ($10 difference) with tax included and find yourself with about $210, plus tax of credit toward that preferred pass if you go with
UT's discount ticket ahead of time. Make sure you click the right radio button... they aren't very able to help you if you don't and it's your mistake.
Then you'll end up paying less in the difference at the guest relations window once you enter the park once. We spent about ten minutes doing it in October, and hubby agreed it was worth it.