Once Upon a Child in downtown Mandeville is a charming, moderately sized store that offers a wide variety of children’s items, including clothing, shoes, toys, books, and swimwear, mainly for infants to age 12. The store is located in an upscale area and features high-quality, name-brand products, with items in excellent condition and in line with current styles. Parents can also sell gently used children’s items for cash or store credit, making it a practical choice for saving money. The buyback process is straightforward but may take some time; it's recommended to drop off items early and return later. Parking is generally available but can be challenging during peak times. While most customers praise the friendly and helpful staff, some have reported less welcoming experiences, particularly regarding the check-in process and staff interactions. Despite mixed feelings on service, many customers appreciate the store's organization and cleanliness. Once Upon a Child is considered a great place to find quality kids' essentials while also recycling items, making it worth a visit for both locals and those traveling from further away. Overall, it stands out as a valuable resource for parents looking to save on children’s needs.