Yes, park casual is fine.
We had Kevin, too. He's great.
The food is fabulous; yes, it's expensive, but you get unrushed time with an Imagineer, a great multi-course meal, a signed plate, and a personalized name tag. I think that the menu is framed or something, too.
We had a choice of entree--steak or fish, I think.
The food was beautifully presented--the Cobb salad was to DIE for! The steak was arranged on some mashed potatoes? with onion rings arranged on top. The creme brulee for dessert was fabulous! I felt completely spoiled!
The kids can get Shirley Temples, too.
Overall, a nice relaxing, informative meal.