The reviews for Sun Retreats Hay Bay reflect a mix of experiences among campers. Many praise the park for its improvements over the years, friendly and helpful staff, and engaging activities for families. Some highlight the ongoing efforts of management to enhance the facilities, such as updating the pool and addressing road dust issues. However, there are also significant complaints regarding water quality, sanitation issues at certain sites, and general maintenance of the park, indicating that while many enjoy their stay, there are still concerns that need to be addressed.