So my Apple Watch order is looking to be a watch for me and my girlfriend and a few extra bands. I am wanting to get a black leather loop band as well but I'm not sure about the size. My wrist measures just under 180mm and that is just about at the top for a medium. So I am planning on ordering both large and medium band and canceling one before my order ships. I'll be going to an Apple Store on the 18th to see the Watch and try the bands to see which fits better. So long story short will it be possible to cancel one of my bands before the pre order ships or will I have to cancel the whole order and start over again?