But this is preventable. In most cases, while you're waiting in line you can get out both cards and be ready to go when it's your turn to order and pay. With C

But this is preventable. In most cases, while you're waiting in line you can get out both cards and be ready to go when it's your turn to order and pay. With Coin, you have to find the cards serially, no matter how much lead time you have.