We did it on our first visit to Sea World last summer, and being as how we are from Australia it was out first Shamu experience as nowhere here has tanks big enough for them.
Anyway, it was really good. Out of the splash zone and the food was way better than you could get elsewhere in the park. I didn't eat most of mine at the show and was carrying it around fora while later and I had people stopping me to ask where I got it. The kids got a cute Shamu lunch box too.