And it was all about the atmosphere...I played it safe and got a burger & onion rings (and splurged on oreo milkshake, yum) - it was good and actually went well with the whole drive-in theme. I can't imagine trying to eat a "real" meal, it's dark in there! No gourmet food here, but it was a good burger (and everyone was right, they made us burgers for dinner even though they weren't on the dinner menu)
DS12 thought is was "awesome" and we had a good time laughing at the old sci fi clips. Glad I went, and thanks everyone for the tips!