Hi Michelle,
How exciting for you and your family! The Dream is a gorgeous ship and you're going to have a blast!
I'm not sure what your ports of call are going to be, but I can tell you that if you are in Nassau, The
Blue Lagoon Island Dolphin Encounter would be great for you to enjoy as a family. It's very appropriate, even for your youngest. Please make sure that you check out the webpage that I've attached for you. It contains a detailed explanation of the amazing experience along with pricing.
As I said, I'm not sure what your ports of call will be so I've attached a
list of dolphin adventures for you. I can assure you that each one is very age appropriate so make sure that you look at the minimum age requirements. Some are not offered for children as young as 3.
I hope this helps! Have a wonderful time and let me know if you have any other questions. Happy sailing!