I was just wondering if there were lockers on Castaway Cay? I'm doing the nature walk and kayak excursion, and don't want to have to bring ALL my stuff for the day with me on that, but don't want to just leave it out, either.

Or is it not a big hassle to run back to the ship to get stuff AFTER the excursion?

I dont recall seeing lockers, but I wasnt looking for them either.
Going back to the ship is not that big of a deal... but it is kinda of a walk depending on where you are on the island.

There are no lockers available. However, I have never seen any problems with personal belongings being secured. Just take your bag with you when you checkin for the nature walk/kayak. They should have a place for you to store your stuff.

Thanks to you both! I'm getting so excited for my little 4 night cruise I can barely stand myself!