Ahoy Elena!
Your crew is in for a vacation of a lifetime on your Eastern Caribbean cruise on the Disney Fantasy! I'm glad you are planning to venture ashore because the ports of call are stunning and filled with adventure! My kiddos tend to be a bit more adventurous on our cruise vacations so your nine year old may surprise you on your sailing.
In St. Maarten, I recommend checking into
Family Fun, Beach and Nature Walk or the
Rib Boat Adventure. The Rib Boat Adventure does include snorkeling, but it is only one component and participation is optional. When you visit St. Thomas, the
Magens Bay Beach Break is a popular choice or the
Kon Tiki Sightseeing and Beach Cruise. On Castaway Cay, I suggest trying the
boat rentals which can include the paddle boats, aqua trikes and stand-up paddle board. Your daredevil might want to give the stand-up paddle board a try since the waves are quite calm. The boat rentals cannot be reserved online so you will want to stop by Castaway Cay's Boat Beach when you are ready to experience 30 minutes of fun!
I hope my suggestions are helpful, Elena! Good luck with your Port Adventure decisions!
Have a magical day!
Nancy