Just found this on DCL website. Guess I should not assume that my answers won't be available there!
Reservation Cancellation Policy:Reservations must be canceled at least 24 hours prior to the reservation time to avoid a cancellation fee. Guests who fail to arrive for a reservation without canceling will be charged the full cost of the Palo dining option.
GET UP TO A $1000 SHIPBOARD CREDIT AND AN EXCLUSIVE GIFT!
If you make your Disney Cruise Line reservation with Dreams Unlimited Travel you’ll receive these incredible shipboard credits to spend on your cruise!