Cute waitress.
I know they're just joking around, but it's closer to sexual harassment than half of what's claimed to be in manga.
Nothing wrong with being on the same wavelength. They're a couple, after all. Even if they claim not to be.
Good distraction. And she's cute being fired up.
"They're moving so fast and not even making eye contact...!"
Spoken as someone who can't cooperate. Those things don't need eye contact.
Not sure how long it would actually take, but it doesn't seem that amazing. Mass producing goes a lot faster per hot dog than regular work mode. It's 18 seconds per hot dog, and they're two.