I brought in my own coffee cup. I was told that it was a liquor control law, and I searched the WA state RCW's and as far as a coffee cup (with the dregs of my coffee within), I have been unsuccessful in getting an answer. Granted, the tackiness of bringing in my own cup is not appropriate (but I like a taller cup for more coffee), so I take responsibility for my actions. Were it not for being told that I was being "monitored with a camera above you" for my actions, this might not be an issue. There is an open container law for alcohol, but does this also include a cup brought in from outside the restaurant?