Save on lunch at Olive Garden with a new coupon! Go to olivegarden.com to see all the details about the coupon and save up to 25% on lunch. The coupon is valid today, Thursday, or Friday. Lock in your discount online; the coupon will be sent via email after locking in your discount. Get a bigger discount the earlier you lock it in. Save 25% before 10 a.m., 20% before 11 a.m., and 15% before 1 p.m.. The coupon is only valid for the day that it is locked in.