Welcome back, Dwight, my fellow Ohio native! It's getting closer and closer to sail time for your family! I'm glad you're already planning out what extras you'd like to book. Since your online check-in time begins soon, it's a great idea to be ready to book right away!
Port Adventures and other special onboard experiences like Spa Treatments and Adult Exclusive dining are charged to your stateroom account on the last night of your cruise. However, when you fill out the order form for any pre-purchase
Gifts and Amenities, you'll need to include your credit card information to pay ahead of time. You'll see an order form link with each item you'd like to pre-order on that page. Simply complete the order form and fax it in, and when you arrive, you can expect that Disney will have taken care of all of the details and your stateroom will be decorated and cake will arrive when you have asked for it.
Have a wonderful time planning these last details before you set sail! Enjoy every moment of your cruise!