Are they staying in multiple rooms on this cruise? Unfortunately, they can only reserve one future cabin per stateroom.
Each household can book 2 staterooms on a single future cruise. It doesn't matter whether your household is cruising in 1 or ten rooms, you can still book 2 staterooms. It is my understanding that if you have two people traveling in a single stateroom, but having different home addresses, they each could book 2 staterooms.
Offer valid for Categories 4–11 only. Offer not valid for concierge-level categories, IGT, OGT and VGT categories with restrictions and 2-night cruises. All staterooms must be booked and deposit paid while onboard. Deposit policies vary by itinerary: sailings 6 nights or fewer are not eligible for a reduced deposit; 7-night sailings and longer are eligible for a reduced deposit. This offer cannot be combined with any other special offers or discounts. This offer is limited to two staterooms on one future cruise date (per household sailing). Additional staterooms may be booked at the current prevailing rates. This offer is nontransferable; name changes to the reservation may be made so long as one adult on the original booking remains on the reservation. Guests making a booking on board must sail within 24 months after the date the original booking was made on board. Block-out dates for this offer apply; block-out dates receive the onboard credit and reduced deposit benefits, but do not receive the 10% discount off prevailing rates. The following block-out dates are valid as of the date of printing of this offer. Additional block-out dates may be added at any time without notice. 2014 block-out dates: Disney Fantasy 12/20, 12/27; Disney Dream 12/22, 12/29; Disney Wonder 12/21, 12/26, 12/30; Disney Magic 12/21, 12/28. 2015 block-out dates: Disney Fantasy 3/28, 4/4, 12/19, 12/26; Disney Dream 3/30, 4/3, 4/6, 6/26, 7/1, 7/5, 11/23, 11/27, 12/24, 12/28, 12/31; Disney Wonder 3/29, 4/3, 5/15, 5/17, 6/29, 10/9, 10/16, 11/20, 12/24, 12/28; Disney Magic 3/29, 4/5, 6/29, 7/10, 11/25, 12/23, 12/27, 12/31. 2016 block-out dates: Disney Fantasy 3/19, 3/26; Disney Dream 3/21, 3/25; Disney Wonder 3/20, 3/25; Disney Magic 3/20, 3/24. See disneycruise.com for details and applicable Terms and Conditions. Subject to availability and all staterooms must be booked and deposit paid while on board. Other discounts do not apply. Offer is subject to change without notice