Ahoy, Meredith!
Thanks so much for cruising by with your question!
Your little ones are going to make the most magical lifetime memories on your Disney Cruise vacation. I'm so excited for your family!
I encourage you to follow the links and check out these
Port Adventures:
In Grand Cayman -
Boatswain's Beach Adventure Marine Park (animal interaction and nature trails),
Rum Point Beach Adventure (a relaxing day at the beach).
In Castaway Cay -
Bicycle Rentals (my favorite - a must do for our family!),
Glass Bottom Boat Scenic Voyage (a one-hour guided sea tour - great for all ages).
Depending on your family's activity level and interest, all of these activities are inclusive of little ones like yours, and will be lots of fun for the whole family! We really enjoyed the Rum Point Beach Adventure on a recent cruise - a beautiful beach, crystal-blue water, and a day of relaxation were just what we needed. The adventure includes a nice ride on a large catamaran, which we loved.
I hope these suggestions are helpful. Hopefully you will find a Port Adventure that's the perfect fit for your family!
Have a magical day! - Diane W.