2 questions-booking exursions/KTTW card

[daltonsdodisney]

We leave in less than 3 weeks and I still have a few questions. I've read a lot about lanyards for the kids, etc.. Mine are 8 and 6. Where is it necessary that they have their KTTW cards with them? Just when we get off at ports? Do they need them anywhere on the ship?
Also, we didn't pre-book excursions. The only thing we wanted to do was snorkel at CC. We thought we'd wait and see the weather and then decide. Do you have any advantage in pre-booking? Do pre-bookers get their equipment first or anything?
Thanks for the help!

 

[Michelle]

They only need their cards when they get off the ship and reboard.

You'll be perfectly fine to wait until you reach Castaway Cay to decide if you want to snorkel or not.

Enjoy!