I always cancelled my ADR's when I didn't use them, I imagine alot of people didn't. Here is the list I found of the restaurants that would charge $10.00 per person if there was a no show.
The list of restaurants is:
1900 Park Fare
Akershus Royal Banquet Hall
Artist Point
California Grill
Cape May Café
Chef Mickeys
Cítricos
The Crystal Palace
Flying Fish Café
The Garden Grill
Hollywood & Vine
Jiko The Cooking Place
Le Cellier Steakhouse
Narcoossees
Ohana
Tusker House Restaurant
The Hollywood Brown Derby
Yachtsman Steakhouse
Victoria & Alberts (cancellation policy is $25/per person)
Pre-paid dining locations will continue to charge the full amount if the reservation is not cancelled at least a day in advance. Those locations are:
Cinderellas Royal Table
Disneys Spirit of Aloha Dinner Show
Hoop-Dee-Doo Musical Revue
Mickeys Backyard BBQ