I'm probably going to be in the minority but I would pick Sci Fi. The food is less than spectacular, but seriously, how bad can a hamburger be? And the milkshakes are good. To me WCC and 50's are very similar in atmosphere. Both are very noisy and busy. And the food is heavy. We do eat at 50's but try never to do it at lunch because we always feel like we need a nap after eating those big meals. The Sci Fi is unique, no place on property like it. Your children are old enough to feed themselves, which is one of the pitfalls of Sci Fi with younger children. And it's a quieter, more relaxing place to stop and take a middday break. Our children are in their 20s and 30s and love going to Sci Fi. Stick to the burgers and shakes, your kids will thank you for taking them there.