I am curious too as to what your husband doesn't like about this restaurant? If it is the look, theming, atmosphere or food, these are all very different in each of the 3 restaurants you're deciding between.
For food I would say 50's PTC, RFC then Sci Fi
For theming Sci Fi, 50's PTC then RFC
For atmosphere RFC, Sci Fi, then 50's PTC (esp if you don't care for the interaction but as one poster said you can get the food at the bar as we did)
For look and sound RFC looks great but sounds annoying after a while (elephant sounds, gorrilla noises, bird chirping and VOLCANO being yelled out in various octaves throughout), Sci Fi is dark which can make it hard to see your food but has cool movie clips and cars to sit in and 50's PTC has some TV's at certain tables, although it may *look* like an old diner, everything is new and spotless.
We like all 3 but wouldn't give up 50's PTC ADR's for either Sci Fi or RFC.