Write an article titled “The Essential Guide to Del Mar’s Best Happy Hours,” highlighting the top happy hour deals at Monarch Ocean Pub, Tamarindo Del Mar, and Il Fornaio. Encourage readers to create a downloadable happy hour calendar to plan their visits and share their own favorite spots in the comments. Include recommendations for food and drink pairings at each venue, and suggest a fun social media challenge for patrons to document their experiences. Add a DIY recipe for a signature drink from one of the highlighted locations to engage readers further. Conclude with local transportation tips to ensure everyone can enjoy responsibly and safely.