My daughter and I did this Christmas 2010 and it was wonderful. The food was great and the cast was incredible. It wasn't crowded and Santa took time with each of the kids who wanted to have their picture taken with him. It beat the rest of our trip at the bigger park down the street with ease.
My boys and I decided to do this on our trip in December 2011- we are pass holders and visit often, so we have done most everything, but this was one thing we had not done yet. We have decided to make it an annual tradition for as long as Sea World continues to offer this. It was so much fun. My one and only complaint is that there is a big chance that they seat you with complete strangers. If you are paying extra for something - you should at least be allowed to have your own private table for your family. Because it was just three of us, they sat us with another family. Aside from that - everything was perfect. The elves go around talking with the children, Mrs. Claus hands out her cookies, the all you can eat buffet was delicious. Loved it!