If they don't have a place to sleep, multi-day trips they talk about using shuttlecraft for don't make sense. Clearly there's a fold-down bunk or something. I mean there doesn't look like there's any place for a toilet either, but there's no way they can be in a shuttlecraft for hours or days and not need one. They gave Scotty a shuttle and he went off to explore the universe. Does that make sense if there's nowhere to sleep?