it must just be illegal in the world of WDW... but, even that is screwy since 5 can stay in a standard room at the Dolphin & at Shades of Green, both on WDW property. It doesn't make sense. Nor does it make sense that a DVC 1BR can only (legally) accommodate 4 people, those are quite a bit larger than a hotel room.
What she said! I am sorry, but that whole line about it being a fire hazard is bunch of hoo-ha! If they can put a crib in any room without it being a fire hazard, then they should easily be able to put in a rollaway without it being a fire hazard. Why don't they? Because they would not make as much money. And to Disney, it's all about the money. JMHO.