A Walk on the Moon (1999)

Summer, 1969: men on the moon, and Woodstock happening near the cabin where the Kantrowitz family stays every summer. The camp's a Jewish fish-bowl. Marty's there weekends; he repairs TVs in Brooklyn. He's square and decent. His wife Pearl and his mother camp with Alison (she's 14) and their younger son. Pearl got pregnant at 17 and feels she missed her youth. While Alison experiences her first date, first kiss, first period, and stealing off to Woodstock with the lifeguard, Pearl has her own sexual awakening with "the blouse man," a peddler who sells at the camp. They too go to Woodstock. Marty confronts Pearl about the affair; she and he have to decide what to do next.