I did notice that the dinette seat that faces forward with its back to the fridge, had seat belt attachments on the floor. So you can secure the kids in back.
This won't be possible with moveable chairs.
The plan at the moment is to attach a shallow table to the wall that hinges down, so now it is more like a bar table that looks out the window. To add another sleep, we can do what we do with a tent, use inflatable matress for extra sleep space.
Something like this but different as it will fold down.