Hi there, we did the Shamu Rocks dining experience last summer and it was so bad I got a full refund. The people where packed in so tight that you couldn't pass between tables without constantly nudging other diners and the queues for the food meant it was 45 min before the whole of our party were sat down to eat together. It is something I personally would never do again but have heard good reports about the Dining with Shamu but have been told as they pack them in there as well.