Tubbie's is a cafeteria style set up. People come in, grab a tray, flatware, etc. and proceed down a line for whatever they want. If they are held up ordering items, you can pass them by, or just come in and walk past the line. Near the end, is a self serve section for coffee, tea, hot chocolate, and cold drinks. Help yourself and walk away. The refillable mugs are stacked right next to the cash register at the end of the line. I can't remember the cost, I think it was $8.50, but I can't be sure.