We did it today - 4pm, but get there at 3:30 to start eating so you can pay attention during the presentation. Seating is already assigned. Lasts until 4:45. Just so you won't be dissapointed - you will not get to touch or feed Shamu. You will get to see him up close. You will probably not be able to take pics of family with Shamu the way it is set up. The food is really good, though so I think it is worth the experience.