No fries at Costco around these parts. But it isn't just them. I'm very sorry to report that french fries aren't the standard side dish with hot dogs at all in the U.S. -- with the major exception of Chicago, where, by the grace of God, they did somehow became the standard side with true Chicago hot dogs. And those are a subject unto themselves. If you want 'em with your dogs elsewhere, you'll have to specifically request them. As I remember it in Chicago, though (from the mid-1980s), you had to specifically state "no fries" if that's what you wanted.