If mystify is the new one that started a couple of years ago? then it was terrible. Overly sentimental (I dont think even disney could have pulled it off) and the fireworks were no where near as good as any of the disney ones (or the amazing display they used to put on at seaworld that you watched from the waterski stadium. We saw them 2 years ago, and this year (despite almost being there at closing time anyway) decided we would rather beat the crowds to the car park than watch the show.
Summary: evening animal shows (especially sea lions) worth waiting for, fireworks are not.