My fiance says this place could use a million dollar renovation. He's been going to this place for years and still looks exactly the same: abandoned, dusty, and dirty. We went recently to a free movie night and didn't mind coming in early for a decent spot. Although we didn't buy anything at the concession stands (COSTCO PIZZA) kids would probably enjoy their small array of arcade games and concessions.
I didn't find the radio quality to be bad at all. I think this has a lot to do with your car itself and not the drive-in. This is a decent place to watch movies during those long summer nights!