I've visited other Dick Clark restaurants and they all feature authentic rock & roll costumes, records, photos and plenty of era paraphernalia. The menu is similar to what you might have found in a drive-in during the 1950's, but with up-to-date prices. We were interested in real malted milk shakes and ordered one each of chocolate and strawberry. Although it took a long time for our shakes to be made, they tasted very good.
Fair warning: the portions are huge!! At least twice as much as we could eat. They serve one glass full with a huge 2nd helping also. Too much of a good thing! If you are ordering a burger, it would be fair to share a shake with a friend. At $3.59 each, they were a decent value.
The atmosphere and music are very enjoyable. A full bar in the front of the restaurant seemed to do a huge business. The food service area was not crowded at mid-afternoon. I would visit another Dick Clark restaurant gladly.