According to he Sims Wiki, at the Diner sims can get a drink or bite to eat, join the Culinary career, take a Cooking class, or enter a weekly eating contest. It is cheaper and faster than eating at the Bistro and there is no chance of children and teens stopping here on a field trip.
See also: Grocery Store and Diner.
World: Barnacle Bay
Name: Hogan's Deep Sea Diner
Size: 40 x 40
Cost: $24,000
World: Bridgeport, Hidden Springs, Riverview, Sunset Valley
Name: Hogan's Deep-Fried Diner (aka The Enchanted Grill)
Size: 17 x 23, 24 x 40, 18 x 24, 30 x 40
Cost: $24,000
Note: Hidden Springs lot contains parking lot on left side.
World: Lucky Palms
Name: Desert Diner
Size: 25 x 20
Cost: $24,000
World: Lunar Lakes
Name: Armstrong’s Diner
Size: 15 x 10
Cost: $24,000
World: Roaring Heights
Name: Clean Your Plate Diner
Cost: $35,172
World: Sunlit Tides
Name: Riku's Luau Diner
Size: 25 x 20
Cost: $24,000
World: Twinbrook
Name: Brunton's Boxcar Diner
Size: 20 x 25
Cost: $24,000
World: University
Name: SimBurger
Size: 30 x 30
Cost: $24,000
Which is your favorite Diner?