Melia Resort, and PV in general

Going to PV for the first time March 12-19 have a few question
Has anyone used the babysitting service
how are the kids clubs? Safe? Good? fun for the kids?
what liquor do they offer here
one thing you wish you would have took with you but forgot
dont get the opportunity to go on vacations alot just want to make this the best possible
Any other thing you have to offer wold be great

My family and I are staying at the Melia resort during the week of March 14th. I am curious about tours. My daughter would love to swim with the dolphins and go horse back riding. We would also like to go whale watching. My kids are 15 and 12. Should we book a tour on line before we go, any suggestions of what tours to book? Is it hard to get transportation to the tours? I heard the beach at Melia is rocky, should we wear those rubber swim shoes? Thank you!