I post this all the time when people complain about Disney with families of 5. WE are a family of 5 and Disney is one of THE BEST places to travel to with 5 people. The deluxe hotel rooms are perfect for families with 3 kids. two queen beds and a sofa day bed. You have so many options at Disney-YC/BC, POLY, GF, BWI, CR. All of these hotels let you put 5 people in a STANDARD hotel room! It's fabulous!
I want to know where else these people with 3 kids are vacationing that they think is better than Disney as far as 5 in a hotel room go?? We have stayed at many hotels in many other places and let me tell you that the industry standard is 4 in a standard room, period. Only at Disney are there what, 6 choices of hotels for families of 5 (in standard rooms). Then add in the moderate hotel with the trundle thing, the new ASM suite things, plus the cabins and I think Disney has the MOST options for families of 5, bar none.
Try booking a hotel in Aruba and see if it's as easy as calling Disney and booking the BC or the POLY. Trust me, it's not. Some make you get 2 rooms, others make you pay per night for a roll away bed, etc Plus you can never get any kind of "specials." Only at Disney do I know that our family of 5 is able to choose from 6 different beautifully themed hotels without any kind of issue.
We have friends that bought the Marriot vacation club time share thing in Aruba because they are a family of 5 and so much trouble with hotel rooms.