Well, one has to meet people. Breakfast is often a good way, at 7 a.m., to meet a key person who is not available elsewhere.
In terms of an 87¢ coffee, I have always, as far as I can tell, paid for my own coffee. I go down and buy my own coffee every time in the morning. If there are other guests who want coffee, yes, it might be charged to my account.
I have never overcharged the government for anything. In fact, I avoid—I avoid—charging per diem. I will never accept a per diem in an instance where, for example, a dinner is provided.
I think I've been honest and above board in all of this. None of these things are ridiculous expenditures.