You guys are very suspicious. Of course there is an apparent reason to do so. You are helping the person you smile at have a pleasant experience.I tend to think people who smile too easily or broadly are up to no good.
I agree.
"Why"? Because if they're smiling when there's no apparent reason to do so -- it's fake.
It really isn't 'suspicion' except of their motive.
As I said I'm interested in the real and detest the artificial. I'm really not interested in seeing the emotion that your employer decides you need to robotically represent; I want to see what you really feel. Because that, I can relate to. That other shit, that's just dehumanizing.
Sure, be pleasant, be courteous, be polite, but do it in your own character, not as a robot Barbie doll.
This particular waitress may not be a smiler. Cool with me; just be yourself. Communication takes place on many levels; smiling is but one.
To return to the beginning, seems to me the issue isn't with the waitress, but with the OP and his rigid my-way-or-the-highway expectations. He's gotta learn to flex. In a lot of things.