Mercado Don Juan is a friendly and welcoming store in Rialto, CA, offering a variety of Mexican food, produce, and everyday essentials. Customers appreciate the helpful and courteous staff, who are always attentive and smiling. The store features a selection of good salsas and fresh produce, including self-grown avocados. Many visitors enjoy buying meat such as carnitas and meaty chicharron, which are ready to serve and highly recommended. The place is also known for its convenience, making it easy to find quick essentials and unique items not available elsewhere. Overall, Mercado Don Juan provides a positive vibe with great service, making it a popular spot for quick bites, fresh produce, and authentic Mexican food.