On the 7 day Western, no matter how you booked for the dolphin swim, you did it at Chananaab Park. Disney's excursion was called the Encounter and you barely touched the dolphins, booking directly allowed you to book a Royal Swim and you swam and interacted with the dolphins. We used the link provided above and we were told that they only had 2 slots left. We asked if we could possibly squeeze in 2 more and they said sure. I'd call and ask directly, and for the same price as Disney's excursion you can have a better time.