One of the things I liked about BW and the refillable mugs is you can go into the bakery and they give you a regular cup so you don't have to wash the mugs each time. A larger volume as well but you do have to take the mug with you. I'm hoping they do something like cruises where you have a sticker or label on your KTTW card so you don't even have to take or use the mug but I'm not going to hold my breath.