Sci-Fi or 50s prime time?

[Spencerfamily]

We like both for different reasons. Do you have two days at HS? Perhaps you could book both but just a have shake at one yet still get to experience the atmosphere? We did that unintentionally two years ago. We had the reservation but were paying OOP and just weren't hungry so just had a shake at Sci Fi Diner. I felt awful and kept apologising to the server but they said it was absolutely fine and we enjoyed the shakes far more than we would have a whole meal and didn't have to lose the whole reservation. I would do this again and may do this August as we are not on the DDP!