On the other hand, we have someone who comes into the Cafe every week or so who writes for a local small newspaper. He usually works from home, but they have a new baby, and sometimes he can't think when he's home. He buys a large coffee, and he sets up his computer, and sits in the Cafe for hours at a time (usually in the middle of the afternoon when things are slow). When his cell phone rings, he goes outside to take the call, knowing that we'll keep an eye on his stuff. (plus he can see the table from the doorway).
Then when he's finished writing, he gets up and makes a point of walking over to the counter to thank me, and he leaves. I have no problem with that.
Rose