"I feel better as a parent" - summer programs help support children's health behaviors and parent wellbeing.

Background: Summer holiday programs offer a promising solution to prevent unhealthy changes in health behaviors often experienced by children during the extended break from school. However, not all families are able to access summer programs. This qualitative study explored parents' experiences of the summer holiday period and their perceptions of receiving free summer programs to identify potential benefits, facilitators, and challenges to access. Methods: Parents (N=24: 100% female, 63% Black) of families randomized to receive free summer programming or experience "summer as usual" (control) were interviewed at the conclusion of summer 2024. Parents of "high-attenders" (N=8), "low-/non-attenders" (N=8) and controls (N=8) were recruited to participate in a semi-structured interview. Participants were asked about general summer experiences and benefits/challenges of the free summer program. Interviews were audio recorded, transcribed and coded. Thematic analysis was conducted with themes compared across attendance groups. Results: Parents described variability in their summer holiday experiences compared with the school year. Themes included family functioning, daily routines, and children's health behaviors. Families with greater work flexibility and financial resources more often reported psychosocial benefits, including reduced stress and increased family time. Families with fewer financial or social support reported greater stress managing childcare demands and activity costs. Control-group parents particularly described stress juggling family roles while trying to provide healthy and enjoyable summer experiences. Summer programs were perceived as providing structured, active, and socially engaging environments that supported children's physical, social, and emotional wellbeing while meeting parents' childcare needs. Cost remained a significant barrier. Families' values, needs, and practical constraints shaped engagement decisions. Free programs improved access and reduced financial distress. Facilitators to engagement included program design, content, and delivery features. Conclusion: Families with stronger financial and social support were better able to offset the increased demands of the summer holidays. Summer programs functioned as a social safety net and provided opportunities for physical activity, social connection, and cognitive engagement while supporting family wellbeing. Ensuring equitable access to summer programs represents a practical and scalable opportunity to support children and families. Future research should explore sustainable funding models and fee structures that promote participation while remaining equitable. Trial registration: NCT05880901.