Adjoining or connecting are only requests and not a bookable category. Disney will NOT guarantee an adjoining or connecting room but will do the best they can. You would need to request this by having that request put on your reservation. This can be done at the time you book.
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This came up for us last week at POR.
When I booked through Disney, I was told they will guarantee connecting rooms, and in fact this statement was in the e-mail confirmation.
When we got to check in, our rooms were not connecting and I was told what you said above.
Luckily I had the printed reservation with the guarantee on it. When I showed it to them they found me 2 connecting rooms.
Still a mystery to me though why they put that on my reservation. Was done through Disney.
Here's what they sent me: (I notice the "guarantee" is under "request", but it still a guarantee.)
03/26/2011 TRANSFER
FR MCO-DISNEY MAGICAL EXPRESS
1 PER PERSON [ 1, 2, 3, 4 ]
03/26/2011 HOTEL
PT ORLEANS RVRSDE- OH7PORT ORLEANS RIVERSIDE-WATER
SPECIAL REQUEST: GUARANTEED CONNECTING ROOMS
SPECIAL REQUEST: TRAVEL WITH
7 NIGHTS
[ 3, 4 ]
03/26/2011 HOTEL
PORT ORLEANS RIVERSIDE-WATER
SPECIAL REQUEST: GUARANTEED CONNECTING ROOMS
SPECIAL REQUEST: TRAVEL WITH
7 NIGHTS
[ 1, 2 ]
03/26/2011 ADMISSION
5D MYW
1 PER PERSON [ 1, 2, 3, 4 ]