Hi, we just got home from the WL last week! We loved our room! We requested a bunk bed room and because of their ages (9,7 and 4) were able to fit one up on top and the two smaller ones on the bottom opposite directions. That also worked well w/2 on top because of the nice rail to hold them in! When we stayed at the POLY last year we had two double beds (I think they were double) and a day bed which was nice for the 3rd kid to sleep on. I have to tell you (and I'm sure you know this by now trying to get resservations for 5) that Disney moderate and value resorts are for families of 4, you have to go deluxe to get either more room or more sleeping options for 5. Wish Disney would make more "bigger" family options at those resorts some day! I think in another year or so we will be packing a blow-up matress as they get older. We are also looking into the DVC to get a bigger acoomodation.
GOOD LUCK!