I've done some digging and found the following list on the
MVMCP thread on the main boards of attractions and restaurants that are open during MVMCP if anyone is wondering:
Main Street, U.S.A.
Casey's Corner - Hot Dogs and Fries
Plaza Ice Cream Parlor
Main Street Bakery
Tony's Town Square Restaurant
The Castle till 6:00p
Crystal Palace[/U][/I] till 6:00p
Emporium
The Chapeau
Main Street Confectionary
Uptown Jewelers
Exposition Hall
Adventureland
Pirates of the Caribbean
Jungle Cruise
The Magic Carpets of Aladdin
Agrabah Bazaar
Pirates Bazaar
Frontierland
Splash Mountain
Big Thunder Mountain Railroad
Country Bear Jamboree
Big Al's
Splashdown Photo (Special Merchandise)
Pecos Bill's Cafe - Burgers and Hot Dogs
Westward Ho - Quick Bites.
Frontierland Turkey Leg
Liberty Square
The Haunted Mansion
Liberty Square Riverboat
Ye Old Christmas Shop
Liberty Tree Tavern - Character Dining till 9:00p
Sleepy Hollow - Quick Bites[/I][/U]
Fantasyland
Peter Pan's Flight
Cinderella's Golden Carrousel
Dumbo the Flying Elephant
Snow White's Scary Adventures
The Many Adventures of Winnie the Pooh
Mickey's PhilharMagic
Mad Tea Party
Pooh's Thoughtful Shop
Sir Mickey's
Seven Dwarf's Mine
Fantasy Faire
Scuttle's Landing - Frozen Treats
Mrs. Pott's Cupboard - Ice Cream
Tomorrowland
Tomorrowland Indy Speedway
Carousel of Progress
Stitch's Great Escape
Astro Orbiter
Buzz Lightyear Space Ranger Spin
Tomorrowland Video Arcade
Space Mountain
Mickey's Star Traders (Special Merchandise)
Space Mountain Shop
Merchant of Venus
Buzz Imaging
Cosmic Ray's Starlight Cafe' - Burgers & Chicken
The Lunching Pad - Quick Bites
Mickey's Toontown Fair
The Barnstormer at Goofy's Wiseacre Farm
Mickey's Country House
Minnie's Country House