At the time the OP bought the AP, blockout tickets still existed, so there would have been an option to buy a blockout ticket and enter the park had that policy not changed half way through the pass year. There is also the option to upgrade an AP to a level that is not blocked any time during the AP year. And the discounts outside the park and any parking benefit would still be valid (unless it's one of the 2 days when those are blocked too.)