Disneyland's "plaza", smack dab in the middle of the park, is the perfect place to put a restaurant or two. Think how many times you pass through the hub on typical visit! No matter where you are, you're never that far from a place like the Plaza Inn, for instance.
I could yammer away, but why don't we let Mr. Disney talk for himself (via the 1965 "Tencenniel" episode of "The Wonderful World of Color"). I think it's fascinating that he is so excited about his new restaurant that he devoted several minutes to it on his TV show. (What ever happened to that aviary he mentions?).
On the opposite side of the Plaza, near the entrance to Adventureland, you'd find the Plaza Pavilion. It appears to be closed on this particular day, and yet there is a large crowd of folks over to the right for some reason. The only explanation is that somebody was giving away free chunks of liverwurst.