My 7 year old granddaughter and I did the swim with dolphins in PV in mid-June.

We loved it and it was a highlight of our trip

- there are 3 sections to the dolphins - 1) swim with the dolphins where you get into the 15-25 foot deep tank (life jackets for everyone) and pet, feed, kiss and ride the dolphins 2) dolphin encounter where you stand in a small tank and pet the dolphins but no swimming 3) dolphin observer where you stay in a tiki hut in the shade and watch and you can video or take pictures from there.
You can purchase their still pictures for $10.00 or DVD for $44.00 but there is no pressure from them. They also have a gift shop and snack bar there. If you are doing dolphin encounter or swim you will wear your suit and shower before you get into the tanks and we showered afterward to get the salt water off before heading back to the ship. Hope this answers your questions please fell free to ask more.