Most people love eating out. Many people can't afford to do it except for a treat or a special occasion. Here's where the dining-specific coupons come in.
In addition to the local coupon books that sometimes land on your doorstep and grace the exits of big stores, there are Web sites dedicated to saving you money at restaurants. Some of them are the same ones that offer the discount on river rafting, and many are dining specific, and with these you'll find you have more options, so you might come across a deal on your favorite restaurant in the whole wide world.
Also -- and this is a big one -- if you live in a major city, it's almost guaranteed there's a "restaurant week" once a year. During restaurant week, dozens of places, some of them very fine dining establishments ($$$$) offer either the standard menu or a prix fixe version for a deeply discounted price. In Denver, for instance, restaurants that might normally cost $200 for two diners offer a full meal for two for $52.80. (Get it? Denver is the Mile High City, or 5,280 feet in elevation). Drinks, of course, are not included.
Next, treasures in unexpected places ...