With our dinette that turns into a bed and our new skybed which acts as a bunk bed above the dinette it is possible to sleep 4 (children are probably more comfortable with this option than adults may be).If you have two adults and two children and decided you wanted the dual cab option so they can ride up front, maybe even in a rear facing car seat on the rear seats, is it possible to have the front bench seats in the cabin become a bed for the children. I agree that four adults might be a tight fit but accommodating a family of four with a crew cab might be a good option.