So the second guy was eating a meal, and the first guy was not, probably doing nothing until his guest arrived.
There is your difference.
There is your difference.
Enjoy the moment. Relax. Observe your surroundings. It's sad seeing people who cannot deal with lack of external stimulus, and the "difference" from the other patron in this situation shouldn't matter.
This is what I want to do (and will try to). It's not that I cannot deal with a lack of external stimulus though, it's just that I'm too anxious and in my own head. But now that I've reached 30 I've started caring a lot less about stuff like this and think I might be able to (for example) enjoy a meal in a restaurant on my own, or sit and have a glass of wine somewhere, if I wanted to.