First Idaho In-N-Out RestaurantLikeSaveCommentDonateSubscribeFirst Idaho In-N-Out RestaurantNTD TonightDec-14-2023A new milestone for In-N-Out Burger as it opened its first restaurant in Idaho on its 75th anniversary. People waited as long as 20 hours to get in. NTD’s Ilene Eng hears more from locals.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.