My mum always said that a child should not be moved out of their room when a visitor comes... We tend to stick with this. All the kids have king singles and we have a spare room with a queen bed in it. So it's a luxury that I can say that I won't move the kids. Some visitors are fun and everyone is happy to move about but some visitors are hard work and it's already disruptive enough to have them in the house but what must it be like to be kicked out of your bed for them? Just something to think about