Welcome back, Cathryn!
75 days prior to sailing, for first time Disney Cruise Line guests, you can begin your online check in and reservations for Port Adventures and Adult Exclusive dining.
Have your reservation number handy, and
log into your reservation to begin adding Cruise Activities. There you can also begin your online check in. Though you do not need to fully complete online check in to book adventures, you might as well get a start on it so it's ready before you set sail. Guests who do not complete online check in will be required to complete these forms at the port terminal. I always like to have it all done ahead of time so we can get to the ship faster once we arrive!
As some Port Adventures and Palo reservation times book up quickly, I'd suggest having an idea of what you'd like to book before your date opens. Then, you can simply log on and add those cruise activities to your reservation once it's time.
I'm happy to help with other questions you might have, Cathryn, so don't hesitate to stop back as you continue to plan your cruise on the Wonder!