This episode is a bit hard to review, because on Five US (United Kingdom) it was edited for time even more heavily that usual, so a lot of the pacing and jokes were gone! But out of what was left... this is a good episode, the first to feature Ed Peck as Officer Kirk. He would pop up in the series occasionally to try and lay down some draconian law, giving Richie and co. something to protest against.
Richie, Potsie and Ralph don't get locked in Arnold's until quite late in the episode, and even then not for that long - they could have probably made a bit more of it, but what there is is good. The Police cell scenes are the best of the episode, and as is often the case, Marion has some of the best lines.