There are some codes that won't allow you to use the kiosk, like the infamous Latin American code that was talked about a lot last year. That required you to go to the counter. I always use some sort of discount code (either published offers or my husband's corporate code) and usually some sort of coupon, and I've always used the kiosk. If you use a coupon, you aren't eligible to use the "skip the kiosk" option, though. (Not sure how that applies for Emerald Aisle members, though.)