In
Disneyland Park:
1. Hakuna Matata, we love the food there, really tasty.
2. Toad Hall, my DH loves their fish & chips, and their chicken burger is really tasty. I really enjoy the theming too, and it's usually one of the quieter restaurants (so is Hakuna Matata, by the way)
3. Cowboy Cookout Bbq, their bbq sauce is really yummy, the ribs are delicious... Great theming as well
In the Studios, the only one I can recommend for a quick meal is the Cafe des Cascadeurs. They count it as a table service not counter service, but menu and prices are similar to the other counter service restaurants. They do have the best burgers in the parks
If you do a google search for restaurants in DLP you can find websites that list the opening hours, depending on when you're going you could find plenty closed.
It's in French but easy enough to understand,
here they have the opening hours for May and June. There are some phone apps that also list the restaurant opening hours (when we're in the parks we usually use Park Pal on IOS)