Hello Tammy,
This is a tough one.
While I haven't personally eaten at
Sanaa, I've heard wonderful things about it. And I'm looking forward to trying the cuisine there at an upcoming trip. While I don't know when your reservation time is, I don't think you necessarily need to change your plans. I really enjoy eating at the different Resorts because it allows our family to explore the hotels. And Kidani Village is a great place to wander! You can explore, have dinner, then hit Downtown Disney afterwards.
But if you would rather spend the entire evening at
Downtown Disney (I can't blame you...I love it there too!), my absolute favorite place to dine there is
Raglan Road Irish Pub. Fabulous food (try to Irish soda bread and the bread pudding) and live music...it can't be beat. And my daughter enjoys watching the dancers on stage.
No matter where you choose, I hope you have a terrific meal!