Armed with a talented cast, writer-director Adam Rehmeier’s 1991-set feature happily squares itself in a tradition of teenage hedonism and broad learning opportunities, settling into a generic but warm glow.

Even with the script’s problems, the film is kinetic, and as in Dinner In America, Rehmeier gets terrific performances from his cast.

With its rambling momentum and quick-witted, almost musical dialogue, it feels less like “Superbad” than a Robert Altman movie, sort of like a pint-size “California Split.”

Snack Shack sings so well in its moment to moment unfolding that even the familiar and predictable story beats are a lot fresher than a poolside hot dog.