Some of the attractions & entertainment could depend on if you have 2 boys or 2 girls, but...
The whole family would enjoy
Beauty and the Beast Live on Stage. It's a nice, condensed version of the movie.
The kids would love meeting
Olaf & maybe the
Star Wars characters if they're into them.
Disney Junior - Live on Stage could still be fun for them even though they're older now. See if they know the characters. It's Disney family entertainment. There are meet & greets with
Disney Junior characters around here, too.
The
Frozen sing-along gets great reviews.
Indiana Jones has a lot of action.
If they're into Star Wars - sign them up to participate in the
Jedi Training.
I have 1 of each and they loved meeting
Buzz & Woody.
Voyage of the Little Mermaid is a cute show, too with live actors & puppets.
Of course, you can also meet
Sorcerer Mickey and a celebrity-dressed
Minnie.
Muppet Vision 3D is cute.
The little one can try to do
Toy Story Midway Mania - or just enjoy seeing everything in 3D while the 7 year old plays. I've seen younger kids on it.
We love the
Sci-Fi. It's tons of fun to sit in a car (which you will do since you have a reservation). The kids can get driver's licenses. Have the waiter take your picture. The movies are silly, campy, B-rated movies. They do have cartoons like Tom & Jerry in there, too. It'll remind your mom of the days of drive-in movie theaters.
For quick service - check out the menus on Disney's site -
https://disneyworld.disney.go.com/dining/hollywood-studios/
You'll find something for everyone to eat.
Here are the shops. Just like in the Magic Kingdom - the whole main strip is filled with shops - left & right with the right side shops being a bit more "specialty" & "normal" shops on the left. -
https://disneyworld.disney.go.com/shops/hollywood-studios/