[So he's pretty observant--she hadn't even thought of service doors.]

Hmm...if I had to guess, I'd say a lot of it's probably automated. This ship is pretty technology advanced from the looks of things, so it's likely a lot of the basic functions are automatic. Maybe even more than just the basic ones.

The food must get filled at the buffet now and then, so maybe you'd see where they come from then.

[She hasn't spent enough time in the restaurants to see how the food goes right through the walls. If she sees that, she might go back to freaking out...]