I looked at some Navigators, and it appears that you can probably book a massage for between 4:30 and 10:00 on the Wonder and between 4:45 and 8:00 on the Magic.
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!