I'm convinced that the people who work at In-N-Out are either robots or being force fed antidepressants. They're the happiest food service people I have ever met - EVER!
I love the fact that In-N-Out's menu is so simple. I don't have to decide between 87 combo meals, or what sides I want. I get a choice of 4 burgers and fries, and that's that.
I got the protein style burger to work around my gluten free diet, and the lettuce was fresh, burger tasty, and did I mention that the service was SUPER FRIENDLY! !