Applicable Resort Dining locations include select Character Dining or Table Service Restaurants at the Disneyland® Resort. Character Dining locations include: Plaza inn on Main Street, USA - Disneyland® Park; Celebration Roundup and Barbeque at Big Thunder Ranch - Disneyland® Park; Disney's PCH Grill - Disney's Paradise Pier® Hotel; Storyteller's Cafe - Disney's Grand Californian Hotel® & Spa. Table Service Restaurants include: Cafe Orleans - Disneyland® Park; Carnation Cafe - Disneyland® Park; Wine Country Trattoria - Disney's California Adventure® Park; Steakhouse 55 - Disneyland® Hotel.
Mickey's Disney Dining Plan
15 Disney Dining choices per person.
Adult/Junior Meal Plans include
Resort Dining** (Breakfast Lunch or Dinner at select locations) 4
Premium Character Dining** (Breakfast Lunch or Dinner at select locations) 1
$15 Dining Certificate 5
Snack Voucher 5
There are not specific dollar amounts on all the vouchers - but it does not seem to specify if it's appetizer, entree, dessert, etc. for the dinner ones. I think you would have to call and ask specifically what it would cover. It just says there are four vouchers that would be good at any of those locations for breakfast, lunch, or dinner, plus one premium character dining (Goofy's or Ariel's)
And for the PP who asked, you can use these vouchers if you are not staying at one of the DLR hotels
EDIT - I just noticed though that you can purchase a "Resort Dining" voucher on its own for $31/adult.