Here's a list of what counter services were open:
Casey's Corner - Hot Dogs and Fries
Plaza Ice Cream Parlor
Main Street Bakery
Pecos Bill's Cafe - Burgers and Hot Dogs
Westward Ho - Quick Bites.
Frontierland Turkey Leg
Sleepy Hollow - Quick Bites
Scuttle's Landing - Frozen Treats
Mrs. Pott's Cupboard - Ice Cream
Cosmic Ray's Starlight Cafe' - Burgers & Chicken
The Lunching Pad - Quick Bites