You can request anything at the time of booking, but that doesn't mean you'll get it. After you check in, you can go to "Dining changes" and make your request again if you didn't get what you wanted. We've always gotten our requests there.....
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!