Through 7/13, take 80% off New York City dining certificates at Restaurant.com via code SUN. For example, a $25 gift certificate to Empire Steak House or Katra, which sells for $10, is now just $2! Not all restaurants participate, but there are hundreds of in the city that do. Each restaurant has their own fine print and restrictions which may exclude alcoholic beverages, weekends, and holidays. Also, most certificates have a minimum spending threshold that must be met to use the certificate.