Can anyone tell me the difference between the Royal Swim and the "Pull, Push and Swim" that is now offer as an excursion on DCL site for Dolphin Discovery in Cozumel? I know if we want the Royal Swim we would have to book directly. I am wondering about the difference in the programs between the two. We have done the encounter a couple of years ago and loved it. Now we want to do a swim. Thanks for your help.