The "pull out" bed which may mean the Murphy Bed (flip down from the wall) was replaced several years ago in all the cabins with a sleeper sofa as FYI.
Comfort ratings on the sofa bed have varied but it does supposedly fit two medium sized grown ups (a bit on the small side IMO reading over the years). But you can put the kids in the back bedroom, turn off the lights, and close the door!
You may want to do more research on the sleeper sofa comfort question.
Bama Ed
PS - but I am ALL about Mom and Dad having a little seperate time from the munchkins (no matter their age/size).