Hi Brian!
Thanks for your question. I seriously cannot WAIT to take advantage of the
"extra" Extra Magic Hours, especially at
Disney's Hollywood Studios. Looking very much forward to Star Wars: Galaxy’s Edge. Just call me Lando Calrissian on that day. :-)
At this time, we're not privy to what actual dining locations will be open during
"extra" Extra Magic Hours, although it's unlikely any restaurants would open for breakfast earlier than the already early 6AM time frame. What I do know is no table service dining will be offered at those hours. Whether they will have select Quick Service dining locations available, we currently don't have the specifics at this time. I suspect, at minimum, they would have some food carts around to where you can get a packaged snack, drink, or maybe a fruit.
The best I'd recommend is to eat a hot meal outside of the theme park somewhere before your arrival, just to be safe.
Some attractions at Hollywood Studios that will be open during those hours include:
*Alien Swirling Saucers
*Millennium Falcon: Smugglers Run
*Rock 'n' Roller Coaster Starring Aerosmith
*Slinky Dog Dash
*Star Tours: The Adventures Continue
*Toy Story Mania!
*The Twilight Zone Tower of Terror
May the Force be with you!
Terry